91939271142 has 16 divisors (see below), whose sum is σ = 188848233072. Its totient is φ = 29818141920.

The previous prime is 91939271131. The next prime is 91939271153. The reversal of 91939271142 is 24117293919.

It is an interprime number because it is at equal distance from previous prime (91939271131) and next prime (91939271153).

It is a junction number, because it is equal to n+sod(n) for n = 91939271091 and 91939271100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207070209 + ... + 207070652.

It is an arithmetic number, because the mean of its divisors is an integer number (11803014567).

Almost surely, 2^91939271142 is an apocalyptic number.

91939271142 is an abundant number, since it is smaller than the sum of its proper divisors (96908961930).

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

91939271142 is a wasteful number, since it uses less digits than its factorization.

91939271142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414140903.

The product of its digits is 244944, while the sum is 48.

The spelling of 91939271142 in words is "ninety-one billion, nine hundred thirty-nine million, two hundred seventy-one thousand, one hundred forty-two".