77054424431 has 2 divisors, whose sum is σ = 77054424432. Its totient is φ = 77054424430.

The previous prime is 77054424401. The next prime is 77054424439. The reversal of 77054424431 is 13442445077.

It is a strong prime.

It is an emirp because it is prime and its reverse (13442445077) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77054424431 - 2⁶ = 77054424367 is a prime.

It is a super-2 number, since 2×77054424431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77054424439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38527212215 + 38527212216.

It is an arithmetic number, because the mean of its divisors is an integer number (38527212216).

Almost surely, 2^77054424431 is an apocalyptic number.

77054424431 is a deficient number, since it is larger than the sum of its proper divisors (1).

77054424431 is an equidigital number, since it uses as much as digits as its factorization.

77054424431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 376320, while the sum is 41.

The spelling of 77054424431 in words is "seventy-seven billion, fifty-four million, four hundred twenty-four thousand, four hundred thirty-one".