1577390321812 has 12 divisors (see below), whose sum is σ = 2762340767200. Its totient is φ = 788150102616.

The previous prime is 1577390321707. The next prime is 1577390321831. The reversal of 1577390321812 is 2181230937751.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136258062 + ... + 136269637.

Almost surely, 2^{1577390321812} is an apocalyptic number.

It is an amenable number.

1577390321812 is a deficient number, since it is larger than the sum of its proper divisors (1184950445388).

1577390321812 is a wasteful number, since it uses less digits than its factorization.

1577390321812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272529150 (or 272529148 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 49.

The spelling of 1577390321812 in words is "one trillion, five hundred seventy-seven billion, three hundred ninety million, three hundred twenty-one thousand, eight hundred twelve".