77382618746 has 4 divisors (see below), whose sum is σ = 116073928122. Its totient is φ = 38691309372.

The previous prime is 77382618743. The next prime is 77382618763. The reversal of 77382618746 is 64781628377.

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., 41381730625 + 36000888121 = 203425^2 + 189739^2 .

It is a super-2 number, since 2×77382618746² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (77382618743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19345654685 + ... + 19345654688.

Almost surely, 2^77382618746 is an apocalyptic number.

77382618746 is a deficient number, since it is larger than the sum of its proper divisors (38691309376).

77382618746 is a wasteful number, since it uses less digits than its factorization.

77382618746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38691309375.

The product of its digits is 18966528, while the sum is 59.

The spelling of 77382618746 in words is "seventy-seven billion, three hundred eighty-two million, six hundred eighteen thousand, seven hundred forty-six".