1299522481156 has 9 divisors (see below), whose sum is σ = 2274168331911. Its totient is φ = 649760100612.

The previous prime is 1299522481099. The next prime is 1299522481163. The reversal of 1299522481156 is 6511842259921.

The square root of 1299522481156 is 1139966.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1299522481097 and 1299522481106.

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 2 ways as a sum of consecutive naturals, for example, 1994941 + ... + 2564923.

Almost surely, 2^{1299522481156} is an apocalyptic number.

1299522481156 is the 1139966-th square number.

It is an amenable number.

1299522481156 is a deficient number, since it is larger than the sum of its proper divisors (974645850755).

1299522481156 is an frugal number, since it uses more digits than its factorization.

1299522481156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139970 (or 569985 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 55.

The spelling of 1299522481156 in words is "one trillion, two hundred ninety-nine billion, five hundred twenty-two million, four hundred eighty-one thousand, one hundred fifty-six".