69974679456 has 432 divisors, whose sum is σ = 224086367232. Its totient is φ = 20692869120.

The previous prime is 69974679433. The next prime is 69974679497. The reversal of 69974679456 is 65497647996.

69974679456 is a `hidden beast` number, since 69 + 9 + 7 + 46 + 79 + 456 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 429292431 + ... + 429292593.

Almost surely, 2^69974679456 is an apocalyptic number.

69974679456 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69974679456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112043183616).

69974679456 is an abundant number, since it is smaller than the sum of its proper divisors (154111687776).

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

69974679456 is a wasteful number, since it uses less digits than its factorization.

69974679456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 403 counting only the distinct ones).

The product of its digits is 617258880, while the sum is 72.

The spelling of 69974679456 in words is "sixty-nine billion, nine hundred seventy-four million, six hundred seventy-nine thousand, four hundred fifty-six".