1577136618368 has 64 divisors (see below), whose sum is σ = 3260303291520. Its totient is φ = 759381020160.

The previous prime is 1577136618353. The next prime is 1577136618391. The reversal of 1577136618368 is 8638166317751.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 1577136618368.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1627130 + ... + 2408697.

It is an arithmetic number, because the mean of its divisors is an integer number (50942238930).

Almost surely, 2^{1577136618368} is an apocalyptic number.

It is an amenable number.

1577136618368 is an abundant number, since it is smaller than the sum of its proper divisors (1683166673152).

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

1577136618368 is an equidigital number, since it uses as much as digits as its factorization.

1577136618368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035955 (or 4035943 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 62.

The spelling of 1577136618368 in words is "one trillion, five hundred seventy-seven billion, one hundred thirty-six million, six hundred eighteen thousand, three hundred sixty-eight".