91697177451963 has 8 divisors (see below), whose sum is σ = 122263214516800. Its totient is φ = 61131296010888.

The previous prime is 91697177451941. The next prime is 91697177452031. The reversal of 91697177451963 is 36915477179619.

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

It is not a de Polignac number, because 91697177451963 - 2¹⁸ = 91697177189819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91697177451863) 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, 37524073 + ... + 39892986.

It is an arithmetic number, because the mean of its divisors is an integer number (15282901814600).

Almost surely, 2^{91697177451963} is an apocalyptic number.

91697177451963 is a deficient number, since it is larger than the sum of its proper divisors (30566037064837).

91697177451963 is a wasteful number, since it uses less digits than its factorization.

91697177451963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77811881.

The product of its digits is 540101520, while the sum is 75.

The spelling of 91697177451963 in words is "ninety-one trillion, six hundred ninety-seven billion, one hundred seventy-seven million, four hundred fifty-one thousand, nine hundred sixty-three".