577878136625881 has 16 divisors (see below), whose sum is σ = 711250410858624. Its totient is φ = 457212116911104.

The previous prime is 577878136625873. The next prime is 577878136625891. The reversal of 577878136625881 is 188526631878775.

It is a cyclic number.

It is not a de Polignac number, because 577878136625881 - 2³ = 577878136625873 is a prime.

It is a super-2 number, since 2×577878136625881² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 577878136625795 and 577878136625804.

It is not an unprimeable number, because it can be changed into a prime (577878136625861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66326536 + ... + 74531641.

It is an arithmetic number, because the mean of its divisors is an integer number (44453150678664).

Almost surely, 2^{577878136625881} is an apocalyptic number.

It is an amenable number.

577878136625881 is a deficient number, since it is larger than the sum of its proper divisors (133372274232743).

577878136625881 is a wasteful number, since it uses less digits than its factorization.

577878136625881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140903280.

The product of its digits is 7586611200, while the sum is 82.

The spelling of 577878136625881 in words is "five hundred seventy-seven trillion, eight hundred seventy-eight billion, one hundred thirty-six million, six hundred twenty-five thousand, eight hundred eighty-one".