77436424175045 has 16 divisors (see below), whose sum is σ = 100073834282352. Its totient is φ = 57182593697280.

The previous prime is 77436424175029. The next prime is 77436424175059. The reversal of 77436424175045 is 54057142463477.

It can be written as a sum of positive squares in 8 ways, for example, as 13869002740321 + 63567421434724 = 3724111^2 + 7972918^2 .

It is not a de Polignac number, because 77436424175045 - 2⁴ = 77436424175029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9726062 + ... + 15794591.

It is an arithmetic number, because the mean of its divisors is an integer number (6254614642647).

Almost surely, 2^{77436424175045} is an apocalyptic number.

It is an amenable number.

77436424175045 is a deficient number, since it is larger than the sum of its proper divisors (22637410107307).

77436424175045 is a wasteful number, since it uses less digits than its factorization.

77436424175045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25567352.

The product of its (nonzero) digits is 79027200, while the sum is 59.

The spelling of 77436424175045 in words is "seventy-seven trillion, four hundred thirty-six billion, four hundred twenty-four million, one hundred seventy-five thousand, forty-five".