77623223847 has 32 divisors (see below), whose sum is σ = 118530982080. Its totient is φ = 44761835520.

The previous prime is 77623223819. The next prime is 77623223857. The reversal of 77623223847 is 74832232677.

It is a happy number.

It is not a de Polignac number, because 77623223847 - 2⁸ = 77623223591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 77623223847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77623223807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103804 + ... + 407457.

It is an arithmetic number, because the mean of its divisors is an integer number (3704093190).

Almost surely, 2^77623223847 is an apocalyptic number.

77623223847 is a deficient number, since it is larger than the sum of its proper divisors (40907758233).

77623223847 is a wasteful number, since it uses less digits than its factorization.

77623223847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511523.

The product of its digits is 4741632, while the sum is 51.

The spelling of 77623223847 in words is "seventy-seven billion, six hundred twenty-three million, two hundred twenty-three thousand, eight hundred forty-seven".