77396723331 has 8 divisors (see below), whose sum is σ = 103199673360. Its totient is φ = 51595794432.

The previous prime is 77396723329. The next prime is 77396723353. The reversal of 77396723331 is 13332769377.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77396723331 - 2¹ = 77396723329 is a prime.

It is a super-2 number, since 2×77396723331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77396723381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413550 + ... + 570803.

It is an arithmetic number, because the mean of its divisors is an integer number (12899959170).

Almost surely, 2^77396723331 is an apocalyptic number.

77396723331 is a deficient number, since it is larger than the sum of its proper divisors (25802950029).

77396723331 is a wasteful number, since it uses less digits than its factorization.

77396723331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010565.

The product of its digits is 3000564, while the sum is 51.

The spelling of 77396723331 in words is "seventy-seven billion, three hundred ninety-six million, seven hundred twenty-three thousand, three hundred thirty-one".