20357244102 has 32 divisors (see below), whose sum is σ = 43903224288. Its totient is φ = 6255645696.

The previous prime is 20357244101. The next prime is 20357244113. The reversal of 20357244102 is 20144275302.

It is a self number, because there is not a number n which added to its sum of digits gives 20357244102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20357244101) 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, 108523 + ... + 229110.

It is an arithmetic number, because the mean of its divisors is an integer number (1371975759).

Almost surely, 2^20357244102 is an apocalyptic number.

20357244102 is an abundant number, since it is smaller than the sum of its proper divisors (23545980186).

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

20357244102 is a wasteful number, since it uses less digits than its factorization.

20357244102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338424.

The product of its (nonzero) digits is 13440, while the sum is 30.

The spelling of 20357244102 in words is "twenty billion, three hundred fifty-seven million, two hundred forty-four thousand, one hundred two".