64671193125 has 320 divisors, whose sum is σ = 151583477760. Its totient is φ = 26460000000.

The previous prime is 64671193121. The next prime is 64671193183. The reversal of 64671193125 is 52139117646.

It is not a de Polignac number, because 64671193125 - 2² = 64671193121 is a prime.

It is a super-2 number, since 2×64671193125² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64671193121) by changing a digit.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 92255275 + ... + 92255975.

It is an arithmetic number, because the mean of its divisors is an integer number (473698368).

Almost surely, 2^64671193125 is an apocalyptic number.

It is an amenable number.

64671193125 is an abundant number, since it is smaller than the sum of its proper divisors (86912284635).

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

64671193125 is a wasteful number, since it uses less digits than its factorization.

64671193125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819 (or 798 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The spelling of 64671193125 in words is "sixty-four billion, six hundred seventy-one million, one hundred ninety-three thousand, one hundred twenty-five".