20138285496 has 32 divisors (see below), whose sum is σ = 57537959040. Its totient is φ = 5753795808.

The previous prime is 20138285477. The next prime is 20138285501. The reversal of 20138285496 is 69458283102.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 59935206 + ... + 59935541.

It is an arithmetic number, because the mean of its divisors is an integer number (1798061220).

Almost surely, 2^20138285496 is an apocalyptic number.

It is an amenable number.

20138285496 is an abundant number, since it is smaller than the sum of its proper divisors (37399673544).

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

20138285496 is a wasteful number, since it uses less digits than its factorization.

20138285496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119870763 (or 119870759 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 20138285496 in words is "twenty billion, one hundred thirty-eight million, two hundred eighty-five thousand, four hundred ninety-six".