746556172866 has 48 divisors (see below), whose sum is σ = 1891606352064. Its totient is φ = 208341256032.

The previous prime is 746556172819. The next prime is 746556172889. The reversal of 746556172866 is 668271655647.

746556172866 is a `hidden beast` number, since 7 + 4 + 6 + 5 + 5 + 617 + 2 + 8 + 6 + 6 = 666.

It is a super-2 number, since 2×746556172866² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68890501 + ... + 68901336.

It is an arithmetic number, because the mean of its divisors is an integer number (39408465668).

Almost surely, 2^746556172866 is an apocalyptic number.

746556172866 is an abundant number, since it is smaller than the sum of its proper divisors (1145050179198).

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

746556172866 is a wasteful number, since it uses less digits than its factorization.

746556172866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137791895 (or 137791892 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 63.

The spelling of 746556172866 in words is "seven hundred forty-six billion, five hundred fifty-six million, one hundred seventy-two thousand, eight hundred sixty-six".