815160078 has 128 divisors (see below), whose sum is σ = 1969920000. Its totient is φ = 249080832.

The previous prime is 815160029. The next prime is 815160113. The reversal of 815160078 is 870061518.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7213750 + ... + 7213862.

It is an arithmetic number, because the mean of its divisors is an integer number (15390000).

Almost surely, 2^815160078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 815160078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (984960000).

815160078 is an abundant number, since it is smaller than the sum of its proper divisors (1154759922).

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

815160078 is a wasteful number, since it uses less digits than its factorization.

815160078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 815160078 is about 28551.0083534715. The cubic root of 815160078 is about 934.1450153654.

The spelling of 815160078 in words is "eight hundred fifteen million, one hundred sixty thousand, seventy-eight".