20281576036 has 6 divisors (see below), whose sum is σ = 35492758070. Its totient is φ = 10140788016.

The previous prime is 20281576027. The next prime is 20281576043. The reversal of 20281576036 is 63067518202.

It can be written as a sum of positive squares in only one way, i.e., 16143227136 + 4138348900 = 127056^2 + 64330^2 .

It is a super-2 number, since 2×20281576036² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20281576036.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2535197001 + ... + 2535197008.

Almost surely, 2^20281576036 is an apocalyptic number.

It is an amenable number.

20281576036 is a deficient number, since it is larger than the sum of its proper divisors (15211182034).

20281576036 is a wasteful number, since it uses less digits than its factorization.

20281576036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5070394013 (or 5070394011 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 20281576036 in words is "twenty billion, two hundred eighty-one million, five hundred seventy-six thousand, thirty-six".