64222071755 has 8 divisors (see below), whose sum is σ = 77073904752. Its totient is φ = 51372711648.

The previous prime is 64222071689. The next prime is 64222071803. The reversal of 64222071755 is 55717022246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64222071755 - 2⁸ = 64222071499 is a prime.

It is a Duffinian number.

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, 560597 + ... + 665366.

It is an arithmetic number, because the mean of its divisors is an integer number (9634238094).

Almost surely, 2^64222071755 is an apocalyptic number.

64222071755 is a deficient number, since it is larger than the sum of its proper divisors (12851832997).

64222071755 is a wasteful number, since it uses less digits than its factorization.

64222071755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236445.

The product of its (nonzero) digits is 235200, while the sum is 41.

The spelling of 64222071755 in words is "sixty-four billion, two hundred twenty-two million, seventy-one thousand, seven hundred fifty-five".