577143872921 has 16 divisors (see below), whose sum is σ = 719759201280. Its totient is φ = 449595496080.

The previous prime is 577143872857. The next prime is 577143872927. The reversal of 577143872921 is 129278341775.

It is a cyclic number.

It is not a de Polignac number, because 577143872921 - 2⁶ = 577143872857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (577143872927) 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, 783461 + ... + 1329698.

It is an arithmetic number, because the mean of its divisors is an integer number (44984950080).

Almost surely, 2^577143872921 is an apocalyptic number.

It is an amenable number.

577143872921 is a deficient number, since it is larger than the sum of its proper divisors (142615328359).

577143872921 is a wasteful number, since it uses less digits than its factorization.

577143872921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116724.

The product of its digits is 5927040, while the sum is 56.

The spelling of 577143872921 in words is "five hundred seventy-seven billion, one hundred forty-three million, eight hundred seventy-two thousand, nine hundred twenty-one".