815380948311 has 16 divisors (see below), whose sum is σ = 1088161686528. Its totient is φ = 543093876000.

The previous prime is 815380948309. The next prime is 815380948427. The reversal of 815380948311 is 113849083518.

It is not a de Polignac number, because 815380948311 - 2¹ = 815380948309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815380948511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50602146 + ... + 50618256.

It is an arithmetic number, because the mean of its divisors is an integer number (68010105408).

Almost surely, 2^815380948311 is an apocalyptic number.

815380948311 is a deficient number, since it is larger than the sum of its proper divisors (272780738217).

815380948311 is a wasteful number, since it uses less digits than its factorization.

815380948311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30382.

The product of its (nonzero) digits is 829440, while the sum is 51.

The spelling of 815380948311 in words is "eight hundred fifteen billion, three hundred eighty million, nine hundred forty-eight thousand, three hundred eleven".