91633404057 has 8 divisors (see below), whose sum is σ = 131576169984. Its totient is φ = 56389787088.

The previous prime is 91633404013. The next prime is 91633404077. The reversal of 91633404057 is 75040433619.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91633404057 - 2⁷ = 91633403929 is a prime.

It is a super-3 number, since 3×91633404057³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (91633404077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1174787193 + ... + 1174787270.

It is an arithmetic number, because the mean of its divisors is an integer number (16447021248).

Almost surely, 2^91633404057 is an apocalyptic number.

It is an amenable number.

91633404057 is a deficient number, since it is larger than the sum of its proper divisors (39942765927).

91633404057 is a wasteful number, since it uses less digits than its factorization.

91633404057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2349574479.

The product of its (nonzero) digits is 272160, while the sum is 42.

The spelling of 91633404057 in words is "ninety-one billion, six hundred thirty-three million, four hundred four thousand, fifty-seven".