1478573857957 has 12 divisors (see below), whose sum is σ = 1821148594380. Its totient is φ = 1192799078016.

The previous prime is 1478573857939. The next prime is 1478573857987. The reversal of 1478573857957 is 7597583758741.

It can be written as a sum of positive squares in 2 ways, for example, as 822783241476 + 655790616481 = 907074^2 + 809809^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1478573857957 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 (1478573857987) 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, 887498482 + ... + 887500147.

It is an arithmetic number, because the mean of its divisors is an integer number (151762382865).

Almost surely, 2^{1478573857957} is an apocalyptic number.

1478573857957 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1478573857957 is a deficient number, since it is larger than the sum of its proper divisors (342574736423).

1478573857957 is a wasteful number, since it uses less digits than its factorization.

1478573857957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774998660 (or 1774998653 counting only the distinct ones).

The product of its digits is 2074464000, while the sum is 76.

The spelling of 1478573857957 in words is "one trillion, four hundred seventy-eight billion, five hundred seventy-three million, eight hundred fifty-seven thousand, nine hundred fifty-seven".