1577442661152 has 48 divisors (see below), whose sum is σ = 4145782112640. Its totient is φ = 525179918592.

The previous prime is 1577442661133. The next prime is 1577442661189. The reversal of 1577442661152 is 2511662447751.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 1577442661095 and 1577442661104.

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, 9830968 + ... + 9990135.

It is an arithmetic number, because the mean of its divisors is an integer number (86370460680).

Almost surely, 2^{1577442661152} is an apocalyptic number.

1577442661152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1577442661152 is an abundant number, since it is smaller than the sum of its proper divisors (2568339451488).

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

1577442661152 is a wasteful number, since it uses less digits than its factorization.

1577442661152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19821945 (or 19821937 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 51.

The spelling of 1577442661152 in words is "one trillion, five hundred seventy-seven billion, four hundred forty-two million, six hundred sixty-one thousand, one hundred fifty-two".