91961254044433 has 8 divisors (see below), whose sum is σ = 93520428039360. Its totient is φ = 90402097005360.

The previous prime is 91961254044409. The next prime is 91961254044469. The reversal of 91961254044433 is 33444045216919.

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

It is a cyclic number.

It is not a de Polignac number, because 91961254044433 - 2²¹ = 91961251947281 is a prime.

It is a super-3 number, since 3×91961254044433³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91961254044733) 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, 6948316 + ... + 15238162.

It is an arithmetic number, because the mean of its divisors is an integer number (11690053504920).

Almost surely, 2^{91961254044433} is an apocalyptic number.

It is an amenable number.

91961254044433 is a deficient number, since it is larger than the sum of its proper divisors (1559173994927).

91961254044433 is a wasteful number, since it uses less digits than its factorization.

91961254044433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8477927.

The product of its (nonzero) digits is 11197440, while the sum is 55.

The spelling of 91961254044433 in words is "ninety-one trillion, nine hundred sixty-one billion, two hundred fifty-four million, forty-four thousand, four hundred thirty-three".