64007771223376 has 20 divisors (see below), whose sum is σ = 128291438013300. Its totient is φ = 30900303348992.

The previous prime is 64007771223371. The next prime is 64007771223379. The reversal of 64007771223376 is 67332217770046.

It can be written as a sum of positive squares in 2 ways, for example, as 13115812723776 + 50891958499600 = 3621576^2 + 7133860^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64007771223371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68973890941 + ... + 68973891868.

It is an arithmetic number, because the mean of its divisors is an integer number (6414571900665).

Almost surely, 2^{64007771223376} is an apocalyptic number.

It is an amenable number.

64007771223376 is an abundant number, since it is smaller than the sum of its proper divisors (64283666789924).

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

64007771223376 is a wasteful number, since it uses less digits than its factorization.

64007771223376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137947782846 (or 137947782840 counting only the distinct ones).

The product of its (nonzero) digits is 12446784, while the sum is 55.

The spelling of 64007771223376 in words is "sixty-four trillion, seven billion, seven hundred seventy-one million, two hundred twenty-three thousand, three hundred seventy-six".