91551613101 has 16 divisors (see below), whose sum is σ = 131565759360. Its totient is φ = 56293583040.

The previous prime is 91551613081. The next prime is 91551613103. The reversal of 91551613101 is 10131615519.

It is not a de Polignac number, because 91551613101 - 2¹⁰ = 91551612077 is a prime.

It is a super-2 number, since 2×91551613101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91551613103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 907105 + ... + 1002966.

It is an arithmetic number, because the mean of its divisors is an integer number (8222859960).

Almost surely, 2^91551613101 is an apocalyptic number.

It is an amenable number.

91551613101 is a deficient number, since it is larger than the sum of its proper divisors (40014146259).

91551613101 is a wasteful number, since it uses less digits than its factorization.

91551613101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911316.

The product of its (nonzero) digits is 4050, while the sum is 33.

The spelling of 91551613101 in words is "ninety-one billion, five hundred fifty-one million, six hundred thirteen thousand, one hundred one".