1577621405612 has 48 divisors (see below), whose sum is σ = 3168632900160. Its totient is φ = 673257446400.

The previous prime is 1577621405603. The next prime is 1577621405627. The reversal of 1577621405612 is 2165041267751.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11584814 + ... + 11720202.

It is an arithmetic number, because the mean of its divisors is an integer number (66013185420).

Almost surely, 2^{1577621405612} is an apocalyptic number.

It is an amenable number.

1577621405612 is an abundant number, since it is smaller than the sum of its proper divisors (1591011494548).

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

1577621405612 is a wasteful number, since it uses less digits than its factorization.

1577621405612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137162 (or 137160 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 47.

The spelling of 1577621405612 in words is "one trillion, five hundred seventy-seven billion, six hundred twenty-one million, four hundred five thousand, six hundred twelve".