1257895628607 has 16 divisors (see below), whose sum is σ = 1702276150400. Its totient is φ = 826056820512.

The previous prime is 1257895628579. The next prime is 1257895628641. The reversal of 1257895628607 is 7068265987521.

It is not a de Polignac number, because 1257895628607 - 2⁶ = 1257895628543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257895628107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9289128 + ... + 9423570.

It is an arithmetic number, because the mean of its divisors is an integer number (106392259400).

Almost surely, 2^{1257895628607} is an apocalyptic number.

1257895628607 is a deficient number, since it is larger than the sum of its proper divisors (444380521793).

1257895628607 is a wasteful number, since it uses less digits than its factorization.

1257895628607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181062.

The product of its (nonzero) digits is 101606400, while the sum is 66.

The spelling of 1257895628607 in words is "one trillion, two hundred fifty-seven billion, eight hundred ninety-five million, six hundred twenty-eight thousand, six hundred seven".