577777661258388 has 12 divisors (see below), whose sum is σ = 1348147876269600. Its totient is φ = 192592553752792.

The previous prime is 577777661258353. The next prime is 577777661258477. The reversal of 577777661258388 is 883852166777775.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×577777661258388³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24074069219088 + ... + 24074069219111.

It is an arithmetic number, because the mean of its divisors is an integer number (112345656355800).

Almost surely, 2^{577777661258388} is an apocalyptic number.

It is an amenable number.

577777661258388 is an abundant number, since it is smaller than the sum of its proper divisors (770370215011212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

577777661258388 is a wasteful number, since it uses less digits than its factorization.

577777661258388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48148138438206 (or 48148138438204 counting only the distinct ones).

The product of its digits is 46467993600, while the sum is 87.

The spelling of 577777661258388 in words is "five hundred seventy-seven trillion, seven hundred seventy-seven billion, six hundred sixty-one million, two hundred fifty-eight thousand, three hundred eighty-eight".