91519927295680 has 672 divisors, whose sum is σ = 271486770004800. Its totient is φ = 29091117662208.

The previous prime is 91519927295677. The next prime is 91519927295683. The reversal of 91519927295680 is 8659272991519.

It is an interprime number because it is at equal distance from previous prime (91519927295677) and next prime (91519927295683).

It is not an unprimeable number, because it can be changed into a prime (91519927295683) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 662365162 + ... + 662503318.

It is an arithmetic number, because the mean of its divisors is an integer number (403998169650).

Almost surely, 2^{91519927295680} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91519927295680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135743385002400).

91519927295680 is an abundant number, since it is smaller than the sum of its proper divisors (179966842709120).

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

91519927295680 is a wasteful number, since it uses less digits than its factorization.

91519927295680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138269 (or 138242 counting only the distinct ones).

The product of its (nonzero) digits is 220449600, while the sum is 73.

The spelling of 91519927295680 in words is "ninety-one trillion, five hundred nineteen billion, nine hundred twenty-seven million, two hundred ninety-five thousand, six hundred eighty".