1257057228356 has 24 divisors (see below), whose sum is σ = 2214004139424. Its totient is φ = 624494666880.

The previous prime is 1257057228347. The next prime is 1257057228397. The reversal of 1257057228356 is 6538227507521.

It is a junction number, because it is equal to n+sod(n) for n = 1257057228298 and 1257057228307.

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, 755330 + ... + 1756313.

It is an arithmetic number, because the mean of its divisors is an integer number (92250172476).

Almost surely, 2^{1257057228356} is an apocalyptic number.

It is an amenable number.

1257057228356 is a deficient number, since it is larger than the sum of its proper divisors (956946911068).

1257057228356 is a wasteful number, since it uses less digits than its factorization.

1257057228356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512451 (or 2512449 counting only the distinct ones).

The product of its (nonzero) digits is 7056000, while the sum is 53.

The spelling of 1257057228356 in words is "one trillion, two hundred fifty-seven billion, fifty-seven million, two hundred twenty-eight thousand, three hundred fifty-six".