74528596986 has 64 divisors (see below), whose sum is σ = 156127150080. Its totient is φ = 23672943360.

The previous prime is 74528596969. The next prime is 74528596991. The reversal of 74528596986 is 68969582547.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a self number, because there is not a number n which added to its sum of digits gives 74528596986.

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, 75204951 + ... + 75205941.

It is an arithmetic number, because the mean of its divisors is an integer number (2439486720).

Almost surely, 2^74528596986 is an apocalyptic number.

74528596986 is an abundant number, since it is smaller than the sum of its proper divisors (81598553094).

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

74528596986 is a wasteful number, since it uses less digits than its factorization.

74528596986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531.

The product of its digits is 261273600, while the sum is 69.

The spelling of 74528596986 in words is "seventy-four billion, five hundred twenty-eight million, five hundred ninety-six thousand, nine hundred eighty-six".