77044271431 has 8 divisors (see below), whose sum is σ = 78360906960. Its totient is φ = 75727996032.

The previous prime is 77044271401. The next prime is 77044271443. The reversal of 77044271431 is 13417244077.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77044271431 is a prime.

It is a super-2 number, since 2×77044271431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77044271401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360591 + ... + 533023.

It is an arithmetic number, because the mean of its divisors is an integer number (9795113370).

Almost surely, 2^77044271431 is an apocalyptic number.

77044271431 is a deficient number, since it is larger than the sum of its proper divisors (1316635529).

77044271431 is a wasteful number, since it uses less digits than its factorization.

77044271431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180065.

The product of its (nonzero) digits is 131712, while the sum is 40.

The spelling of 77044271431 in words is "seventy-seven billion, forty-four million, two hundred seventy-one thousand, four hundred thirty-one".