21374336150020 has 48 divisors (see below), whose sum is σ = 51350171378688. Its totient is φ = 7320948877440.

The previous prime is 21374336150003. The next prime is 21374336150029. The reversal of 21374336150020 is 2005163347312.

It is not an unprimeable number, because it can be changed into a prime (21374336150029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76891447 + ... + 77168926.

It is an arithmetic number, because the mean of its divisors is an integer number (1069795237056).

Almost surely, 2^{21374336150020} is an apocalyptic number.

21374336150020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21374336150020 is an abundant number, since it is smaller than the sum of its proper divisors (29975835228668).

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

21374336150020 is a wasteful number, since it uses less digits than its factorization.

21374336150020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154061380 (or 154061378 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 37.

Adding to 21374336150020 its reverse (2005163347312), we get a palindrome (23379499497332).

The spelling of 21374336150020 in words is "twenty-one trillion, three hundred seventy-four billion, three hundred thirty-six million, one hundred fifty thousand, twenty".