77023440413 has 8 divisors (see below), whose sum is σ = 77285691000. Its totient is φ = 76761427968.

The previous prime is 77023440409. The next prime is 77023440437. The reversal of 77023440413 is 31404432077.

It can be written as a sum of positive squares in 4 ways, for example, as 4621008484 + 72402431929 = 67978^2 + 269077^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 77023440413 - 2² = 77023440409 is a prime.

It is a super-2 number, since 2×77023440413² (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 (77023440493) 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, 600845 + ... + 717677.

It is an arithmetic number, because the mean of its divisors is an integer number (9660711375).

Almost surely, 2^77023440413 is an apocalyptic number.

It is an amenable number.

77023440413 is a deficient number, since it is larger than the sum of its proper divisors (262250587).

77023440413 is a wasteful number, since it uses less digits than its factorization.

77023440413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119071.

The product of its (nonzero) digits is 56448, while the sum is 35.

The spelling of 77023440413 in words is "seventy-seven billion, twenty-three million, four hundred forty thousand, four hundred thirteen".