101501145520 has 20 divisors (see below), whose sum is σ = 235990163520. Its totient is φ = 40600458176.

The previous prime is 101501145517. The next prime is 101501145547. The reversal of 101501145520 is 25541105101.

It is a tau number, because it is divible by the number of its divisors (20).

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 3 ways as a sum of consecutive naturals, for example, 634382080 + ... + 634382239.

It is an arithmetic number, because the mean of its divisors is an integer number (11799508176).

Almost surely, 2^101501145520 is an apocalyptic number.

101501145520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101501145520 is an abundant number, since it is smaller than the sum of its proper divisors (134489018000).

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

101501145520 is a wasteful number, since it uses less digits than its factorization.

101501145520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268764332 (or 1268764326 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 25.

The spelling of 101501145520 in words is "one hundred one billion, five hundred one million, one hundred forty-five thousand, five hundred twenty".