74627455472646 has 16 divisors (see below), whose sum is σ = 149741083297344. Its totient is φ = 24794789765544.

The previous prime is 74627455472569. The next prime is 74627455472683. The reversal of 74627455472646 is 64627455472647.

It is a super-2 number, since 2×74627455472646² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 20257179340 + ... + 20257183023.

It is an arithmetic number, because the mean of its divisors is an integer number (9358817706084).

Almost surely, 2^{74627455472646} is an apocalyptic number.

74627455472646 is an abundant number, since it is smaller than the sum of its proper divisors (75113627824698).

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

74627455472646 is a wasteful number, since it uses less digits than its factorization.

74627455472646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40514362675.

The product of its digits is 1896652800, while the sum is 69.

Subtracting from 74627455472646 its reverse (64627455472647), we obtain a palindrome (9999999999999).

The spelling of 74627455472646 in words is "seventy-four trillion, six hundred twenty-seven billion, four hundred fifty-five million, four hundred seventy-two thousand, six hundred forty-six".