77936315471 has 16 divisors (see below), whose sum is σ = 89982057984. Its totient is φ = 66119251104.

The previous prime is 77936315461. The next prime is 77936315473. The reversal of 77936315471 is 17451363977.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77936315471 is a prime.

It is a super-3 number, since 3×77936315471³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77936315473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1395140 + ... + 1449926.

It is an arithmetic number, because the mean of its divisors is an integer number (5623878624).

Almost surely, 2^77936315471 is an apocalyptic number.

77936315471 is a deficient number, since it is larger than the sum of its proper divisors (12045742513).

77936315471 is a wasteful number, since it uses less digits than its factorization.

77936315471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56870.

The product of its digits is 3333960, while the sum is 53.

The spelling of 77936315471 in words is "seventy-seven billion, nine hundred thirty-six million, three hundred fifteen thousand, four hundred seventy-one".