667652056755 has 16 divisors (see below), whose sum is σ = 1068253418400. Its totient is φ = 356077721088.

The previous prime is 667652056733. The next prime is 667652056769. The reversal of 667652056755 is 557650256766.

It is not a de Polignac number, because 667652056755 - 2⁹ = 667652056243 is a prime.

It is a super-2 number, since 2×667652056755² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3018171 + ... + 3231819.

It is an arithmetic number, because the mean of its divisors is an integer number (66765838650).

Almost surely, 2^667652056755 is an apocalyptic number.

667652056755 is a deficient number, since it is larger than the sum of its proper divisors (400601361645).

667652056755 is a wasteful number, since it uses less digits than its factorization.

667652056755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421990.

The product of its (nonzero) digits is 79380000, while the sum is 60.

The spelling of 667652056755 in words is "six hundred sixty-seven billion, six hundred fifty-two million, fifty-six thousand, seven hundred fifty-five".