66516230136 has 64 divisors (see below), whose sum is σ = 169163678880. Its totient is φ = 21792204800.

The previous prime is 66516230119. The next prime is 66516230189. The reversal of 66516230136 is 63103261566.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66516230094 and 66516230103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231940 + ... + 432236.

Almost surely, 2^66516230136 is an apocalyptic number.

It is an amenable number.

66516230136 is an abundant number, since it is smaller than the sum of its proper divisors (102647448744).

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

66516230136 is a wasteful number, since it uses less digits than its factorization.

66516230136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200544 (or 200540 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 39.

The spelling of 66516230136 in words is "sixty-six billion, five hundred sixteen million, two hundred thirty thousand, one hundred thirty-six".