67287994961476 has 27 divisors (see below), whose sum is σ = 118221368564509. Its totient is φ = 33510987035648.

The previous prime is 67287994961459. The next prime is 67287994961477. The reversal of 67287994961476 is 67416949978276.

The square root of 67287994961476 is 8202926.

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

It can be written as a sum of positive squares in only one way, i.e., 66244786028100 + 1043208933376 = 8139090^2 + 1021376^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67287994961393 and 67287994961402.

It is not an unprimeable number, because it can be changed into a prime (67287994961477) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4216295985 + ... + 4216311943.

Almost surely, 2^{67287994961476} is an apocalyptic number.

67287994961476 is the 8202926-th square number.

It is an amenable number.

67287994961476 is a deficient number, since it is larger than the sum of its proper divisors (50933373603033).

67287994961476 is an frugal number, since it uses more digits than its factorization.

67287994961476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32436 (or 16218 counting only the distinct ones).

The product of its digits is 13826598912, while the sum is 85.

The spelling of 67287994961476 in words is "sixty-seven trillion, two hundred eighty-seven billion, nine hundred ninety-four million, nine hundred sixty-one thousand, four hundred seventy-six".