73989699525 has 72 divisors (see below), whose sum is σ = 153373159680. Its totient is φ = 33395656320.

The previous prime is 73989699503. The next prime is 73989699527. The reversal of 73989699525 is 52599698937.

It is a happy number.

73989699525 is a `hidden beast` number, since 7 + 3 + 9 + 8 + 9 + 6 + 99 + 525 = 666.

It is not a de Polignac number, because 73989699525 - 2⁶ = 73989699461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73989699527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 172902 + ... + 421751.

Almost surely, 2^73989699525 is an apocalyptic number.

73989699525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

73989699525 is an abundant number, since it is smaller than the sum of its proper divisors (79383460155).

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

73989699525 is a wasteful number, since it uses less digits than its factorization.

73989699525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594755 (or 594747 counting only the distinct ones).

The product of its digits is 330674400, while the sum is 72.

The spelling of 73989699525 in words is "seventy-three billion, nine hundred eighty-nine million, six hundred ninety-nine thousand, five hundred twenty-five".