91370020151 has 4 divisors (see below), whose sum is σ = 96178968600. Its totient is φ = 86561071704.

The previous prime is 91370020141. The next prime is 91370020153. The reversal of 91370020151 is 15102007319.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91370020151 - 2³⁰ = 90296278327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91370020153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2404474196 + ... + 2404474233.

It is an arithmetic number, because the mean of its divisors is an integer number (24044742150).

Almost surely, 2^91370020151 is an apocalyptic number.

91370020151 is a deficient number, since it is larger than the sum of its proper divisors (4808948449).

91370020151 is a wasteful number, since it uses less digits than its factorization.

91370020151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4808948448.

The product of its (nonzero) digits is 1890, while the sum is 29.

The spelling of 91370020151 in words is "ninety-one billion, three hundred seventy million, twenty thousand, one hundred fifty-one".