91640199377383 has 16 divisors (see below), whose sum is σ = 95682601792800. Its totient is φ = 87689690210304.

The previous prime is 91640199377381. The next prime is 91640199377411. The reversal of 91640199377383 is 38377399104619.

It is a cyclic number.

It is not a de Polignac number, because 91640199377383 - 2¹ = 91640199377381 is a prime.

It is a super-2 number, since 2×91640199377383² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91640199377381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28340458 + ... + 31407991.

It is an arithmetic number, because the mean of its divisors is an integer number (5980162612050).

Almost surely, 2^{91640199377383} is an apocalyptic number.

91640199377383 is a deficient number, since it is larger than the sum of its proper divisors (4042402415417).

91640199377383 is a wasteful number, since it uses less digits than its factorization.

91640199377383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59749218.

The product of its (nonzero) digits is 185177664, while the sum is 70.

The spelling of 91640199377383 in words is "ninety-one trillion, six hundred forty billion, one hundred ninety-nine million, three hundred seventy-seven thousand, three hundred eighty-three".