815511930150 has 48 divisors (see below), whose sum is σ = 2060629410384. Its totient is φ = 213366641280.

The previous prime is 815511930139. The next prime is 815511930173. The reversal of 815511930150 is 51039115518.

It is a junction number, because it is equal to n+sod(n) for n = 815511930099 and 815511930108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51282109 + ... + 51298008.

It is an arithmetic number, because the mean of its divisors is an integer number (42929779383).

Almost surely, 2^815511930150 is an apocalyptic number.

815511930150 is an abundant number, since it is smaller than the sum of its proper divisors (1245117480234).

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

815511930150 is a wasteful number, since it uses less digits than its factorization.

815511930150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102580185 (or 102580180 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 39.

The spelling of 815511930150 in words is "eight hundred fifteen billion, five hundred eleven million, nine hundred thirty thousand, one hundred fifty".