74964688646947 has 16 divisors (see below), whose sum is σ = 81796608000000. Its totient is φ = 68135595292800.

The previous prime is 74964688646863. The next prime is 74964688646989.

74964688646947 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 74964688646947 - 2³¹ = 74962541163299 is a prime.

It is a super-2 number, since 2×74964688646947² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74964688646347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2398931179 + ... + 2398962427.

It is an arithmetic number, because the mean of its divisors is an integer number (5112288000000).

Almost surely, 2^{74964688646947} is an apocalyptic number.

74964688646947 is a deficient number, since it is larger than the sum of its proper divisors (6831919353053).

74964688646947 is a wasteful number, since it uses less digits than its factorization.

74964688646947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69474.

The product of its digits is 84276412416, while the sum is 88.

The spelling of 74964688646947 in words is "seventy-four trillion, nine hundred sixty-four billion, six hundred eighty-eight million, six hundred forty-six thousand, nine hundred forty-seven".