667564125755 has 8 divisors (see below), whose sum is σ = 801701336592. Its totient is φ = 533635043488.

The previous prime is 667564125749. The next prime is 667564125769. The reversal of 667564125755 is 557521465766.

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 667564125755 - 2²⁴ = 667547348539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 667564125694 and 667564125703.

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, 52025084 + ... + 52037913.

It is an arithmetic number, because the mean of its divisors is an integer number (100212667074).

Almost surely, 2^667564125755 is an apocalyptic number.

667564125755 is a deficient number, since it is larger than the sum of its proper divisors (134137210837).

667564125755 is a wasteful number, since it uses less digits than its factorization.

667564125755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104064285.

The product of its digits is 52920000, while the sum is 59.

The spelling of 667564125755 in words is "six hundred sixty-seven billion, five hundred sixty-four million, one hundred twenty-five thousand, seven hundred fifty-five".