20112510552 has 32 divisors (see below), whose sum is σ = 53238999600. Its totient is φ = 6309807104.

The previous prime is 20112510533. The next prime is 20112510557. The reversal of 20112510552 is 25501521102.

It is a super-2 number, since 2×20112510552² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112510557) 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 7 ways as a sum of consecutive naturals, for example, 24647277 + ... + 24648092.

Almost surely, 2^20112510552 is an apocalyptic number.

It is an amenable number.

20112510552 is an abundant number, since it is smaller than the sum of its proper divisors (33126489048).

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

20112510552 is a wasteful number, since it uses less digits than its factorization.

20112510552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49295395 (or 49295391 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

The spelling of 20112510552 in words is "twenty billion, one hundred twelve million, five hundred ten thousand, five hundred fifty-two".