74646646956 has 48 divisors (see below), whose sum is σ = 221175252480. Its totient is φ = 21327613200.

The previous prime is 74646646951. The next prime is 74646646969. The reversal of 74646646956 is 65964664647.

It is a happy number.

74646646956 is a `hidden beast` number, since 7 + 4 + 64 + 66 + 469 + 56 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 74646646893 and 74646646902.

It is not an unprimeable number, because it can be changed into a prime (74646646951) 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, 49368720 + ... + 49370231.

It is an arithmetic number, because the mean of its divisors is an integer number (4607817760).

Almost surely, 2^74646646956 is an apocalyptic number.

It is an amenable number.

74646646956 is an abundant number, since it is smaller than the sum of its proper divisors (146528605524).

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

74646646956 is a wasteful number, since it uses less digits than its factorization.

74646646956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98738971 (or 98738963 counting only the distinct ones).

The product of its digits is 156764160, while the sum is 63.

The spelling of 74646646956 in words is "seventy-four billion, six hundred forty-six million, six hundred forty-six thousand, nine hundred fifty-six".