61150015664 has 20 divisors (see below), whose sum is σ = 118512534504. Its totient is φ = 30566135808.

The previous prime is 61150015651. The next prime is 61150015673. The reversal of 61150015664 is 46651005116.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497462 + ... + 608085.

Almost surely, 2^61150015664 is an apocalyptic number.

It is an amenable number.

61150015664 is a deficient number, since it is larger than the sum of its proper divisors (57362518840).

61150015664 is a wasteful number, since it uses less digits than its factorization.

61150015664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109012 (or 1109006 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 61150015664 in words is "sixty-one billion, one hundred fifty million, fifteen thousand, six hundred sixty-four".