91542350520 has 96 divisors (see below), whose sum is σ = 297550000800. Its totient is φ = 24408228096.

The previous prime is 91542350489. The next prime is 91542350573. The reversal of 91542350520 is 2505324519.

It is a happy number.

91542350520 is a `hidden beast` number, since 91 + 5 + 42 + 3 + 5 + 0 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 5453901 + ... + 5470659.

It is an arithmetic number, because the mean of its divisors is an integer number (3099479175).

Almost surely, 2^91542350520 is an apocalyptic number.

91542350520 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

91542350520 is an abundant number, since it is smaller than the sum of its proper divisors (206007650280).

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

91542350520 is a wasteful number, since it uses less digits than its factorization.

91542350520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31949 (or 31942 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 91542350520 in words is "ninety-one billion, five hundred forty-two million, three hundred fifty thousand, five hundred twenty".