20364125988 has 24 divisors (see below), whose sum is σ = 50311370592. Its totient is φ = 6388745344.

The previous prime is 20364125987. The next prime is 20364126001. The reversal of 20364125988 is 88952146302.

It is a super-2 number, since 2×20364125988² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20364125981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49911870 + ... + 49912277.

It is an arithmetic number, because the mean of its divisors is an integer number (2096307108).

Almost surely, 2^20364125988 is an apocalyptic number.

It is an amenable number.

20364125988 is an abundant number, since it is smaller than the sum of its proper divisors (29947244604).

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

20364125988 is a wasteful number, since it uses less digits than its factorization.

20364125988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99824171 (or 99824169 counting only the distinct ones).

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

The spelling of 20364125988 in words is "twenty billion, three hundred sixty-four million, one hundred twenty-five thousand, nine hundred eighty-eight".