20112551552 has 16 divisors (see below), whose sum is σ = 40067974050. Its totient is φ = 10056275712.

The previous prime is 20112551531. The next prime is 20112551609. The reversal of 20112551552 is 25515521102.

It can be written as a sum of positive squares in only one way, i.e., 19347697216 + 764854336 = 139096^2 + 27656^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78564527 + ... + 78564782.

Almost surely, 2^20112551552 is an apocalyptic number.

It is an amenable number.

20112551552 is a deficient number, since it is larger than the sum of its proper divisors (19955422498).

20112551552 is an equidigital number, since it uses as much as digits as its factorization.

20112551552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157129323 (or 157129311 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 29.

The spelling of 20112551552 in words is "twenty billion, one hundred twelve million, five hundred fifty-one thousand, five hundred fifty-two".