1257057179040 has 576 divisors, whose sum is σ = 4523470479360. Its totient is φ = 292492062720.

The previous prime is 1257057179029. The next prime is 1257057179071. The reversal of 1257057179040 is 409717507521.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1268472945 + ... + 1268473935.

It is an arithmetic number, because the mean of its divisors is an integer number (7853247360).

Almost surely, 2^{1257057179040} is an apocalyptic number.

1257057179040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1257057179040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2261735239680).

1257057179040 is an abundant number, since it is smaller than the sum of its proper divisors (3266413300320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1257057179040 is a wasteful number, since it uses less digits than its factorization.

1257057179040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877 (or 1856 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 48.

The spelling of 1257057179040 in words is "one trillion, two hundred fifty-seven billion, fifty-seven million, one hundred seventy-nine thousand, forty".