20516761152 has 42 divisors (see below), whose sum is σ = 58807593078. Its totient is φ = 6838920192.

The previous prime is 20516761081. The next prime is 20516761319. The reversal of 20516761152 is 25116761502.

20516761152 is a `hidden beast` number, since 20 + 5 + 16 + 7 + 611 + 5 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17831863296 + 2684897856 = 133536^2 + 51816^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17809113 + ... + 17810264.

Almost surely, 2^20516761152 is an apocalyptic number.

It is an amenable number.

20516761152 is an abundant number, since it is smaller than the sum of its proper divisors (38290831926).

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

20516761152 is a wasteful number, since it uses less digits than its factorization.

20516761152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35619395 (or 35619382 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The spelling of 20516761152 in words is "twenty billion, five hundred sixteen million, seven hundred sixty-one thousand, one hundred fifty-two".