91412422530 has 128 divisors (see below), whose sum is σ = 258968779776. Its totient is φ = 20358777600.

The previous prime is 91412422511. The next prime is 91412422531. The reversal of 91412422530 is 3522421419.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 91412422491 and 91412422500.

It is not an unprimeable number, because it can be changed into a prime (91412422531) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 854697 + ... + 955683.

It is an arithmetic number, because the mean of its divisors is an integer number (2023193592).

Almost surely, 2^91412422530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91412422530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129484389888).

91412422530 is an abundant number, since it is smaller than the sum of its proper divisors (167556357246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91412422530 is a wasteful number, since it uses less digits than its factorization.

91412422530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101232.

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 91412422530 its reverse (3522421419), we get a palindrome (94934843949).

The spelling of 91412422530 in words is "ninety-one billion, four hundred twelve million, four hundred twenty-two thousand, five hundred thirty".