21314145732 has 48 divisors (see below), whose sum is σ = 54272538432. Its totient is φ = 6456647680.

The previous prime is 21314145649. The next prime is 21314145739. The reversal of 21314145732 is 23754141312.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 21314145693 and 21314145702.

It is not an unprimeable number, because it can be changed into a prime (21314145739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388348 + ... + 439820.

It is an arithmetic number, because the mean of its divisors is an integer number (1130677884).

Almost surely, 2^21314145732 is an apocalyptic number.

21314145732 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21314145732 is an abundant number, since it is smaller than the sum of its proper divisors (32958392700).

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

21314145732 is a wasteful number, since it uses less digits than its factorization.

21314145732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54628 (or 54626 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The spelling of 21314145732 in words is "twenty-one billion, three hundred fourteen million, one hundred forty-five thousand, seven hundred thirty-two".