1257795161451 has 12 divisors (see below), whose sum is σ = 1865918348112. Its totient is φ = 815867131536.

The previous prime is 1257795161449. The next prime is 1257795161453. The reversal of 1257795161451 is 1541615977521.

1257795161451 is a `hidden beast` number, since 1 + 2 + 5 + 7 + 79 + 516 + 1 + 4 + 51 = 666.

It is an interprime number because it is at equal distance from previous prime (1257795161449) and next prime (1257795161453).

It is not a de Polignac number, because 1257795161451 - 2¹ = 1257795161449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1257795161453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1888580991 + ... + 1888581656.

It is an arithmetic number, because the mean of its divisors is an integer number (155493195676).

Almost surely, 2^{1257795161451} is an apocalyptic number.

1257795161451 is a deficient number, since it is larger than the sum of its proper divisors (608123186661).

1257795161451 is a wasteful number, since it uses less digits than its factorization.

1257795161451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3777162690 (or 3777162687 counting only the distinct ones).

The product of its digits is 2646000, while the sum is 54.

The spelling of 1257795161451 in words is "one trillion, two hundred fifty-seven billion, seven hundred ninety-five million, one hundred sixty-one thousand, four hundred fifty-one".