91667769261 has 8 divisors (see below), whose sum is σ = 123305318400. Its totient is φ = 60571033152.

The previous prime is 91667769247. The next prime is 91667769299. The reversal of 91667769261 is 16296776619.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91667769261 - 2⁵ = 91667769229 is a prime.

It is a super-2 number, since 2×91667769261² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91667769195 and 91667769204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91667729261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135202861 + ... + 135203538.

It is an arithmetic number, because the mean of its divisors is an integer number (15413164800).

Almost surely, 2^91667769261 is an apocalyptic number.

It is an amenable number.

91667769261 is a deficient number, since it is larger than the sum of its proper divisors (31637549139).

91667769261 is a wasteful number, since it uses less digits than its factorization.

91667769261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270406515.

The product of its digits is 10287648, while the sum is 60.

The spelling of 91667769261 in words is "ninety-one billion, six hundred sixty-seven million, seven hundred sixty-nine thousand, two hundred sixty-one".