101580087438 has 48 divisors (see below), whose sum is σ = 221421217680. Its totient is φ = 33655431168.

The previous prime is 101580087421. The next prime is 101580087571. The reversal of 101580087438 is 834780085101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 101580087393 and 101580087402.

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, 8619406 + ... + 8631182.

It is an arithmetic number, because the mean of its divisors is an integer number (4612942035).

Almost surely, 2^101580087438 is an apocalyptic number.

101580087438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

101580087438 is an abundant number, since it is smaller than the sum of its proper divisors (119841130242).

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

101580087438 is a wasteful number, since it uses less digits than its factorization.

101580087438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14641 (or 14638 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The spelling of 101580087438 in words is "one hundred one billion, five hundred eighty million, eighty-seven thousand, four hundred thirty-eight".