863215300691016 has 64 divisors (see below), whose sum is σ = 2656047079056000. Its totient is φ = 227661178203648.

The previous prime is 863215300690993. The next prime is 863215300691047. The reversal of 863215300691016 is 610196003512368.

It is a super-2 number, since 2×863215300691016² (a number of 31 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 863215300691016.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197622548341 + ... + 197622552708.

It is an arithmetic number, because the mean of its divisors is an integer number (41500735610250).

Almost surely, 2^{863215300691016} is an apocalyptic number.

It is an amenable number.

863215300691016 is an abundant number, since it is smaller than the sum of its proper divisors (1792831778364984).

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

863215300691016 is a wasteful number, since it uses less digits than its factorization.

863215300691016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395245101078 (or 395245101074 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 863215300691016 in words is "eight hundred sixty-three trillion, two hundred fifteen billion, three hundred million, six hundred ninety-one thousand, sixteen".