91647442350 has 72 divisors (see below), whose sum is σ = 246260881152. Its totient is φ = 24435868800.

The previous prime is 91647442333. The next prime is 91647442409. The reversal of 91647442350 is 5324474619.

91647442350 is a `hidden beast` number, since 91 + 6 + 474 + 42 + 3 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 91647442296 and 91647442305.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5693914 + ... + 5709986.

It is an arithmetic number, because the mean of its divisors is an integer number (3420290016).

Almost surely, 2^91647442350 is an apocalyptic number.

91647442350 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

91647442350 is an abundant number, since it is smaller than the sum of its proper divisors (154613438802).

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

91647442350 is a wasteful number, since it uses less digits than its factorization.

91647442350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28762 (or 28754 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 91647442350 in words is "ninety-one billion, six hundred forty-seven million, four hundred forty-two thousand, three hundred fifty".