77461938746 has 4 divisors (see below), whose sum is σ = 116192908122. Its totient is φ = 38730969372.

The previous prime is 77461938737. The next prime is 77461938787. The reversal of 77461938746 is 64783916477.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 76637617225 + 824321521 = 276835^2 + 28711^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19365484685 + ... + 19365484688.

Almost surely, 2^77461938746 is an apocalyptic number.

77461938746 is a deficient number, since it is larger than the sum of its proper divisors (38730969376).

77461938746 is a wasteful number, since it uses less digits than its factorization.

77461938746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38730969375.

The product of its digits is 42674688, while the sum is 62.

The spelling of 77461938746 in words is "seventy-seven billion, four hundred sixty-one million, nine hundred thirty-eight thousand, seven hundred forty-six".