1257023706056 has 32 divisors (see below), whose sum is σ = 2481895416000. Its totient is φ = 595209663936.

The previous prime is 1257023706023. The next prime is 1257023706077. The reversal of 1257023706056 is 6506073207521.

It is a super-2 number, since 2×1257023706056² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1257023705998 and 1257023706016.

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 7 ways as a sum of consecutive naturals, for example, 1137716 + ... + 1951523.

It is an arithmetic number, because the mean of its divisors is an integer number (77559231750).

Almost surely, 2^{1257023706056} is an apocalyptic number.

It is an amenable number.

1257023706056 is a deficient number, since it is larger than the sum of its proper divisors (1224871709944).

1257023706056 is a wasteful number, since it uses less digits than its factorization.

1257023706056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3091941 (or 3091937 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 44.

The spelling of 1257023706056 in words is "one trillion, two hundred fifty-seven billion, twenty-three million, seven hundred six thousand, fifty-six".