91329629279572 has 6 divisors (see below), whose sum is σ = 159826851239258. Its totient is φ = 45664814639784.

The previous prime is 91329629279563. The next prime is 91329629279573. The reversal of 91329629279572 is 27597292692319.

It can be written as a sum of positive squares in only one way, i.e., 53192137370436 + 38137491909136 = 7293294^2 + 6175556^2 .

It is a super-2 number, since 2×91329629279572² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91329629279495 and 91329629279504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91329629279573) 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 as a sum of consecutive naturals, namely, 11416203659943 + ... + 11416203659950.

Almost surely, 2^{91329629279572} is an apocalyptic number.

It is an amenable number.

91329629279572 is a deficient number, since it is larger than the sum of its proper divisors (68497221959686).

91329629279572 is a wasteful number, since it uses less digits than its factorization.

91329629279572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22832407319897 (or 22832407319895 counting only the distinct ones).

The product of its digits is 462944160, while the sum is 73.

The spelling of 91329629279572 in words is "ninety-one trillion, three hundred twenty-nine billion, six hundred twenty-nine million, two hundred seventy-nine thousand, five hundred seventy-two".