91956703405 has 32 divisors (see below), whose sum is σ = 132791328000. Its totient is φ = 59718477312.

The previous prime is 91956703393. The next prime is 91956703409. The reversal of 91956703405 is 50430765919.

It is a cyclic number.

It is not a de Polignac number, because 91956703405 - 2¹³ = 91956695213 is a prime.

It is a super-2 number, since 2×91956703405² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91956703409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2273539 + ... + 2313631.

It is an arithmetic number, because the mean of its divisors is an integer number (4149729000).

Almost surely, 2^91956703405 is an apocalyptic number.

91956703405 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

91956703405 is a deficient number, since it is larger than the sum of its proper divisors (40834624595).

91956703405 is a wasteful number, since it uses less digits than its factorization.

91956703405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43573.

The product of its (nonzero) digits is 1020600, while the sum is 49.

The spelling of 91956703405 in words is "ninety-one billion, nine hundred fifty-six million, seven hundred three thousand, four hundred five".