675408220164 has 18 divisors (see below), whose sum is σ = 1707281889950. Its totient is φ = 225136073376.

The previous prime is 675408220163. The next prime is 675408220169. The reversal of 675408220164 is 461022804576.

675408220164 is a `hidden beast` number, since 6 + 7 + 5 + 408 + 220 + 16 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 583573766400 + 91834453764 = 763920^2 + 303042^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (675408220163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9380669689 + ... + 9380669760.

Almost surely, 2^675408220164 is an apocalyptic number.

It is an amenable number.

675408220164 is an abundant number, since it is smaller than the sum of its proper divisors (1031873669786).

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

675408220164 is a wasteful number, since it uses less digits than its factorization.

675408220164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18761339459 (or 18761339454 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 675408220164 in words is "six hundred seventy-five billion, four hundred eight million, two hundred twenty thousand, one hundred sixty-four".