64611777188712 has 32 divisors (see below), whose sum is σ = 173954784739680. Its totient is φ = 19880546827200.

The previous prime is 64611777188689. The next prime is 64611777188743. The reversal of 64611777188712 is 21788177711646.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103544514414 + ... + 103544515037.

It is an arithmetic number, because the mean of its divisors is an integer number (5436087023115).

Almost surely, 2^{64611777188712} is an apocalyptic number.

It is an amenable number.

64611777188712 is an abundant number, since it is smaller than the sum of its proper divisors (109343007550968).

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

64611777188712 is a wasteful number, since it uses less digits than its factorization.

64611777188712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207089029473 (or 207089029469 counting only the distinct ones).

The product of its digits is 44255232, while the sum is 66.

The spelling of 64611777188712 in words is "sixty-four trillion, six hundred eleven billion, seven hundred seventy-seven million, one hundred eighty-eight thousand, seven hundred twelve".