815401421348 has 24 divisors (see below), whose sum is σ = 1428277851000. Its totient is φ = 407322171648.

The previous prime is 815401421333. The next prime is 815401421357. The reversal of 815401421348 is 843124104518.

It can be written as a sum of positive squares in 4 ways, for example, as 46135603264 + 769265818084 = 214792^2 + 877078^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29692328 + ... + 29719776.

It is an arithmetic number, because the mean of its divisors is an integer number (59511577125).

Almost surely, 2^815401421348 is an apocalyptic number.

It is an amenable number.

815401421348 is a deficient number, since it is larger than the sum of its proper divisors (612876429652).

815401421348 is a wasteful number, since it uses less digits than its factorization.

815401421348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34079 (or 34077 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 41.

The spelling of 815401421348 in words is "eight hundred fifteen billion, four hundred one million, four hundred twenty-one thousand, three hundred forty-eight".