818376124490 has 24 divisors (see below), whose sum is σ = 1539908505828. Its totient is φ = 313117819520.

The previous prime is 818376124487. The next prime is 818376124507. The reversal of 818376124490 is 94421673818.

It can be written as a sum of positive squares in 2 ways, for example, as 661312130521 + 157063993969 = 813211^2 + 396313^2 .

It is a super-2 number, since 2×818376124490² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 77345951 + ... + 77356530.

Almost surely, 2^818376124490 is an apocalyptic number.

818376124490 is a deficient number, since it is larger than the sum of its proper divisors (721532381338).

818376124490 is a wasteful number, since it uses less digits than its factorization.

818376124490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154702534 (or 154702511 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 818376124490 in words is "eight hundred eighteen billion, three hundred seventy-six million, one hundred twenty-four thousand, four hundred ninety".