77013725553489 has 16 divisors (see below), whose sum is σ = 106226055158400. Its totient is φ = 49571947385856.

The previous prime is 77013725553487. The next prime is 77013725553503. The reversal of 77013725553489 is 98435552731077.

It is not a de Polignac number, because 77013725553489 - 2¹ = 77013725553487 is a prime.

It is a super-2 number, since 2×77013725553489² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (77013725553487) 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, 73979377 + ... + 75013169.

It is an arithmetic number, because the mean of its divisors is an integer number (6639128447400).

Almost surely, 2^{77013725553489} is an apocalyptic number.

It is an amenable number.

77013725553489 is a deficient number, since it is larger than the sum of its proper divisors (29212329604911).

77013725553489 is a wasteful number, since it uses less digits than its factorization.

77013725553489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890104.

The product of its (nonzero) digits is 222264000, while the sum is 66.

The spelling of 77013725553489 in words is "seventy-seven trillion, thirteen billion, seven hundred twenty-five million, five hundred fifty-three thousand, four hundred eighty-nine".