21374332241625 has 128 divisors (see below), whose sum is σ = 44162880652800. Its totient is φ = 10110548160000.

The previous prime is 21374332241621. The next prime is 21374332241629. The reversal of 21374332241625 is 52614223347312.

21374332241625 is a `hidden beast` number, since 2 + 1 + 3 + 74 + 332 + 241 + 6 + 2 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (21374332241621) and next prime (21374332241629).

It is not a de Polignac number, because 21374332241625 - 2² = 21374332241621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (21374332241621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5499090 + ... + 8543339.

It is an arithmetic number, because the mean of its divisors is an integer number (345022505100).

Almost surely, 2^{21374332241625} is an apocalyptic number.

21374332241625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21374332241625 is an abundant number, since it is smaller than the sum of its proper divisors (22788548411175).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21374332241625 is a wasteful number, since it uses less digits than its factorization.

21374332241625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14042505 (or 14042489 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 45.

Adding to 21374332241625 its reverse (52614223347312), we get a palindrome (73988555588937).

The spelling of 21374332241625 in words is "twenty-one trillion, three hundred seventy-four billion, three hundred thirty-two million, two hundred forty-one thousand, six hundred twenty-five".