20132551016 has 8 divisors (see below), whose sum is σ = 37748533170. Its totient is φ = 10066275504.

The previous prime is 20132551007. The next prime is 20132551039. The reversal of 20132551016 is 61015523102.

It can be written as a sum of positive squares in only one way, i.e., 12292156900 + 7840394116 = 110870^2 + 88546^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20132551016² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258284431 + ... + 1258284446.

Almost surely, 2^20132551016 is an apocalyptic number.

It is an amenable number.

20132551016 is a deficient number, since it is larger than the sum of its proper divisors (17615982154).

20132551016 is a wasteful number, since it uses less digits than its factorization.

20132551016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516568883 (or 2516568879 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The spelling of 20132551016 in words is "twenty billion, one hundred thirty-two million, five hundred fifty-one thousand, sixteen".