77673472331 has 16 divisors (see below), whose sum is σ = 95938358208. Its totient is φ = 61237209600.

The previous prime is 77673472231. The next prime is 77673472343. The reversal of 77673472331 is 13327437677.

It is a happy number.

It is not a de Polignac number, because 77673472331 - 2¹⁰ = 77673471307 is a prime.

It is a super-2 number, since 2×77673472331² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77673472331.

It is not an unprimeable number, because it can be changed into a prime (77673472231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1493210 + ... + 1544351.

It is an arithmetic number, because the mean of its divisors is an integer number (5996147388).

Almost surely, 2^77673472331 is an apocalyptic number.

77673472331 is a deficient number, since it is larger than the sum of its proper divisors (18264885877).

77673472331 is a wasteful number, since it uses less digits than its factorization.

77673472331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3037862.

The product of its digits is 3111696, while the sum is 50.

The spelling of 77673472331 in words is "seventy-seven billion, six hundred seventy-three million, four hundred seventy-two thousand, three hundred thirty-one".