577271981643 has 16 divisors (see below), whose sum is σ = 887873598720. Its totient is φ = 326786808096.

The previous prime is 577271981639. The next prime is 577271981677. The reversal of 577271981643 is 346189172775.

It is not a de Polignac number, because 577271981643 - 2² = 577271981639 is a prime.

It is a super-2 number, since 2×577271981643² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (577271981603) 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, 128451688 + ... + 128456181.

It is an arithmetic number, because the mean of its divisors is an integer number (55492099920).

Almost surely, 2^577271981643 is an apocalyptic number.

577271981643 is a deficient number, since it is larger than the sum of its proper divisors (310601617077).

577271981643 is a wasteful number, since it uses less digits than its factorization.

577271981643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256907986.

The product of its digits is 17781120, while the sum is 60.

The spelling of 577271981643 in words is "five hundred seventy-seven billion, two hundred seventy-one million, nine hundred eighty-one thousand, six hundred forty-three".