101049991560 has 160 divisors (see below), whose sum is σ = 388160372160. Its totient is φ = 23097135744.

The previous prime is 101049991541. The next prime is 101049991573. The reversal of 101049991560 is 65199940101.

101049991560 is a `hidden beast` number, since 1 + 0 + 1 + 0 + 499 + 9 + 156 + 0 = 666.

It is a super-2 number, since 2×101049991560² (a number of 23 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2205054 + ... + 2250413.

It is an arithmetic number, because the mean of its divisors is an integer number (2426002326).

Almost surely, 2^101049991560 is an apocalyptic number.

101049991560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101049991560 is an abundant number, since it is smaller than the sum of its proper divisors (287110380600).

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

101049991560 is a wasteful number, since it uses less digits than its factorization.

101049991560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4455497 (or 4455484 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 45.

The spelling of 101049991560 in words is "one hundred one billion, forty-nine million, nine hundred ninety-one thousand, five hundred sixty".