91477212304 has 45 divisors (see below), whose sum is σ = 179595353779. Its totient is φ = 45137936480.

The previous prime is 91477212287. The next prime is 91477212317. The reversal of 91477212304 is 40321277419.

It is a happy number.

The square root of 91477212304 is 302452.

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

It is a super-2 number, since 2×91477212304² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 100413609 + ... + 100414519.

Almost surely, 2^91477212304 is an apocalyptic number.

91477212304 is the 302452-nd square number.

It is an amenable number.

91477212304 is a deficient number, since it is larger than the sum of its proper divisors (88118141475).

91477212304 is an frugal number, since it uses more digits than its factorization.

91477212304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996 (or 996 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 91477212304 in words is "ninety-one billion, four hundred seventy-seven million, two hundred twelve thousand, three hundred four".