863515515340 has 48 divisors (see below), whose sum is σ = 1831298676480. Its totient is φ = 341994755520.

The previous prime is 863515515337. The next prime is 863515515341. The reversal of 863515515340 is 43515515368.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (863515515341) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13339171 + ... + 13403749.

It is an arithmetic number, because the mean of its divisors is an integer number (38152055760).

Almost surely, 2^863515515340 is an apocalyptic number.

It is an amenable number.

863515515340 is an abundant number, since it is smaller than the sum of its proper divisors (967783161140).

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

863515515340 is a wasteful number, since it uses less digits than its factorization.

863515515340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71182 (or 71180 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 863515515340 in words is "eight hundred sixty-three billion, five hundred fifteen million, five hundred fifteen thousand, three hundred forty".