91405845294 has 32 divisors (see below), whose sum is σ = 185510255616. Its totient is φ = 30021623040.

The previous prime is 91405845283. The next prime is 91405845299. The reversal of 91405845294 is 49254850419.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91405845299) 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, 213822 + ... + 478049.

It is an arithmetic number, because the mean of its divisors is an integer number (5797195488).

Almost surely, 2^91405845294 is an apocalyptic number.

91405845294 is an abundant number, since it is smaller than the sum of its proper divisors (94104410322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91405845294 is a wasteful number, since it uses less digits than its factorization.

91405845294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692200.

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 91405845294 in words is "ninety-one billion, four hundred five million, eight hundred forty-five thousand, two hundred ninety-four".