20452497102 has 24 divisors (see below), whose sum is σ = 44373414384. Its totient is φ = 6808318944.

The previous prime is 20452497059. The next prime is 20452497103. The reversal of 20452497102 is 20179425402.

20452497102 is a `hidden beast` number, since 20 + 4 + 524 + 9 + 7 + 102 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20452497103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 751263 + ... + 778010.

It is an arithmetic number, because the mean of its divisors is an integer number (1848892266).

Almost surely, 2^20452497102 is an apocalyptic number.

20452497102 is an abundant number, since it is smaller than the sum of its proper divisors (23920917282).

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

20452497102 is a wasteful number, since it uses less digits than its factorization.

20452497102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530024 (or 1530021 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 20452497102 in words is "twenty billion, four hundred fifty-two million, four hundred ninety-seven thousand, one hundred two".