91918200001 has 16 divisors (see below), whose sum is σ = 95290675200. Its totient is φ = 88610238288.

The previous prime is 91918199993. The next prime is 91918200007. The reversal of 91918200001 is 10000281919.

It is a cyclic number.

It is not a de Polignac number, because 91918200001 - 2³ = 91918199993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91918200007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1526206 + ... + 1585288.

It is an arithmetic number, because the mean of its divisors is an integer number (5955667200).

Almost surely, 2^91918200001 is an apocalyptic number.

It is an amenable number.

91918200001 is a deficient number, since it is larger than the sum of its proper divisors (3372475199).

91918200001 is a wasteful number, since it uses less digits than its factorization.

91918200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59628.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 91918200001 in words is "ninety-one billion, nine hundred eighteen million, two hundred thousand, one".