94378598521 has 45 divisors (see below), whose sum is σ = 107032224831. Its totient is φ = 83212400304.

The previous prime is 94378598513. The next prime is 94378598549. The reversal of 94378598521 is 12589587349.

The square root of 94378598521 is 307211.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 84451266025 + 9927332496 = 290605^2 + 99636^2 .

It is not a de Polignac number, because 94378598521 - 2³ = 94378598513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 94378598521.

It is not an unprimeable number, because it can be changed into a prime (94378598221) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 2550772915 + ... + 2550772951.

Almost surely, 2^94378598521 is an apocalyptic number.

94378598521 is the 307211-st square number.

94378598521 is the 153606-th centered octagonal number.

It is an amenable number.

94378598521 is a deficient number, since it is larger than the sum of its proper divisors (12653626310).

94378598521 is an frugal number, since it uses more digits than its factorization.

94378598521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 79 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 61.

The spelling of 94378598521 in words is "ninety-four billion, three hundred seventy-eight million, five hundred ninety-eight thousand, five hundred twenty-one".