77473970836 has 12 divisors (see below), whose sum is σ = 138732459712. Its totient is φ = 37836125208.

The previous prime is 77473970803. The next prime is 77473970837. The reversal of 77473970836 is 63807937477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77473970837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225214860 + ... + 225215203.

Almost surely, 2^77473970836 is an apocalyptic number.

It is an amenable number.

77473970836 is a deficient number, since it is larger than the sum of its proper divisors (61258488876).

77473970836 is a wasteful number, since it uses less digits than its factorization.

77473970836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450430110 (or 450430108 counting only the distinct ones).

The product of its (nonzero) digits is 37340352, while the sum is 61.

The spelling of 77473970836 in words is "seventy-seven billion, four hundred seventy-three million, nine hundred seventy thousand, eight hundred thirty-six".