77322516481 has 4 divisors (see below), whose sum is σ = 88368590272. Its totient is φ = 66276442692.

The previous prime is 77322516463. The next prime is 77322516499. The reversal of 77322516481 is 18461522377.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (77322516463) and next prime (77322516499).

It is a cyclic number.

It is not a de Polignac number, because 77322516481 - 2¹⁵ = 77322483713 is a prime.

It is a super-2 number, since 2×77322516481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77322516181) 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 3 ways as a sum of consecutive naturals, for example, 5523036885 + ... + 5523036898.

It is an arithmetic number, because the mean of its divisors is an integer number (22092147568).

Almost surely, 2^77322516481 is an apocalyptic number.

It is an amenable number.

77322516481 is a deficient number, since it is larger than the sum of its proper divisors (11046073791).

77322516481 is a wasteful number, since it uses less digits than its factorization.

77322516481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11046073790.

The product of its digits is 564480, while the sum is 46.

The spelling of 77322516481 in words is "seventy-seven billion, three hundred twenty-two million, five hundred sixteen thousand, four hundred eighty-one".