815473971446280 has 128 divisors (see below), whose sum is σ = 2471678115338880. Its totient is φ = 215214794219520.

The previous prime is 815473971446231. The next prime is 815473971446287. The reversal of 815473971446280 is 82644179374518.

It is not an unprimeable number, because it can be changed into a prime (815473971446287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 879648762 + ... + 880575318.

It is an arithmetic number, because the mean of its divisors is an integer number (19309985276085).

It is a 2-persistent number, because it is pandigital, and so is 2⋅815473971446280 = 1630947942892560, but 3⋅815473971446280 = 2446421914338840 is not.

Almost surely, 2^{815473971446280} is an apocalyptic number.

It is an amenable number.

815473971446280 is an abundant number, since it is smaller than the sum of its proper divisors (1656204143892600).

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

815473971446280 is a wasteful number, since it uses less digits than its factorization.

815473971446280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002279 (or 1002275 counting only the distinct ones).

The product of its (nonzero) digits is 325140480, while the sum is 69.

The spelling of 815473971446280 in words is "eight hundred fifteen trillion, four hundred seventy-three billion, nine hundred seventy-one million, four hundred forty-six thousand, two hundred eighty".