77336367481 has 4 divisors (see below), whose sum is σ = 77355331200. Its totient is φ = 77317403764.

The previous prime is 77336367473. The next prime is 77336367539. The reversal of 77336367481 is 18476363377.

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 a cyclic number.

It is not a de Polignac number, because 77336367481 - 2³ = 77336367473 is a prime.

It is a super-2 number, since 2×77336367481² (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 (77336367781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9475741 + ... + 9483898.

It is an arithmetic number, because the mean of its divisors is an integer number (19338832800).

Almost surely, 2^77336367481 is an apocalyptic number.

It is an amenable number.

77336367481 is a deficient number, since it is larger than the sum of its proper divisors (18963719).

77336367481 is a wasteful number, since it uses less digits than its factorization.

77336367481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18963718.

The product of its digits is 10668672, while the sum is 55.

The spelling of 77336367481 in words is "seventy-seven billion, three hundred thirty-six million, three hundred sixty-seven thousand, four hundred eighty-one".