91475713275 has 192 divisors, whose sum is σ = 171866618880. Its totient is φ = 42699571200.

The previous prime is 91475713271. The next prime is 91475713279. The reversal of 91475713275 is 57231757419.

It is an interprime number because it is at equal distance from previous prime (91475713271) and next prime (91475713279).

It is not a de Polignac number, because 91475713275 - 2² = 91475713271 is a prime.

It is a super-2 number, since 2×91475713275² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91475713271) 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 191 ways as a sum of consecutive naturals, for example, 292254519 + ... + 292254831.

It is an arithmetic number, because the mean of its divisors is an integer number (895138640).

Almost surely, 2^91475713275 is an apocalyptic number.

91475713275 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

91475713275 is a deficient number, since it is larger than the sum of its proper divisors (80390905605).

91475713275 is a wasteful number, since it uses less digits than its factorization.

91475713275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646 (or 641 counting only the distinct ones).

The product of its digits is 1852200, while the sum is 51.

The spelling of 91475713275 in words is "ninety-one billion, four hundred seventy-five million, seven hundred thirteen thousand, two hundred seventy-five".