71787060036 has 36 divisors (see below), whose sum is σ = 181484447872. Its totient is φ = 23926024944.

The previous prime is 71787060031. The next prime is 71787060073. The reversal of 71787060036 is 63006078717.

It is a happy number.

71787060036 is a `hidden beast` number, since 7 + 1 + 7 + 8 + 7 + 0 + 600 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×71787060036² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71787059973 and 71787060000.

It is not an unprimeable number, because it can be changed into a prime (71787060031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176805 + ... + 418131.

Almost surely, 2^71787060036 is an apocalyptic number.

It is an amenable number.

71787060036 is an abundant number, since it is smaller than the sum of its proper divisors (109697387836).

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

71787060036 is a wasteful number, since it uses less digits than its factorization.

71787060036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249600 (or 249595 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The spelling of 71787060036 in words is "seventy-one billion, seven hundred eighty-seven million, sixty thousand, thirty-six".