77354238927 has 32 divisors (see below), whose sum is σ = 126962513920. Its totient is φ = 40902109920.

The previous prime is 77354238919. The next prime is 77354238943. The reversal of 77354238927 is 72983245377.

It is not a de Polignac number, because 77354238927 - 2³ = 77354238919 is a prime.

It is a super-2 number, since 2×77354238927² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77354248927) 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, 2237149 + ... + 2271462.

It is an arithmetic number, because the mean of its divisors is an integer number (3967578560).

Almost surely, 2^77354238927 is an apocalyptic number.

77354238927 is a deficient number, since it is larger than the sum of its proper divisors (49608274993).

77354238927 is a wasteful number, since it uses less digits than its factorization.

77354238927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4508683.

The product of its digits is 17781120, while the sum is 57.

The spelling of 77354238927 in words is "seventy-seven billion, three hundred fifty-four million, two hundred thirty-eight thousand, nine hundred twenty-seven".