74961683520 has 224 divisors, whose sum is σ = 239972502528. Its totient is φ = 19825139712.

The previous prime is 74961683519. The next prime is 74961683551. The reversal of 74961683520 is 2538616947.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114795514 + ... + 114796166.

It is a 1-persistent number, because it is pandigital, but 2⋅74961683520 = 149923367040 is not.

Almost surely, 2^74961683520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74961683520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119986251264).

74961683520 is an abundant number, since it is smaller than the sum of its proper divisors (165010819008).

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

74961683520 is a wasteful number, since it uses less digits than its factorization.

74961683520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477 (or 1467 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 74961683520 in words is "seventy-four billion, nine hundred sixty-one million, six hundred eighty-three thousand, five hundred twenty".