91545552345 has 16 divisors (see below), whose sum is σ = 157740028992. Its totient is φ = 45068579520.

The previous prime is 91545552337. The next prime is 91545552349. The reversal of 91545552345 is 54325554519.

It is not a de Polignac number, because 91545552345 - 2³ = 91545552337 is a prime.

It is a super-2 number, since 2×91545552345² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91545552294 and 91545552303.

It is not an unprimeable number, because it can be changed into a prime (91545552349) 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, 234731991 + ... + 234732380.

It is an arithmetic number, because the mean of its divisors is an integer number (9858751812).

Almost surely, 2^91545552345 is an apocalyptic number.

It is an amenable number.

91545552345 is a deficient number, since it is larger than the sum of its proper divisors (66194476647).

91545552345 is a wasteful number, since it uses less digits than its factorization.

91545552345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469464392.

The product of its digits is 2700000, while the sum is 48.

The spelling of 91545552345 in words is "ninety-one billion, five hundred forty-five million, five hundred fifty-two thousand, three hundred forty-five".