1257045934620 has 96 divisors (see below), whose sum is σ = 4022742528000. Its totient is φ = 287310818304.

The previous prime is 1257045934609. The next prime is 1257045934643. The reversal of 1257045934620 is 264395407521.

It is a self number, because there is not a number n which added to its sum of digits gives 1257045934620.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10355236 + ... + 10475924.

It is an arithmetic number, because the mean of its divisors is an integer number (41903568000).

Almost surely, 2^{1257045934620} is an apocalyptic number.

1257045934620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1257045934620 is an abundant number, since it is smaller than the sum of its proper divisors (2765696593380).

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

1257045934620 is a wasteful number, since it uses less digits than its factorization.

1257045934620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145507 (or 145505 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 48.

The spelling of 1257045934620 in words is "one trillion, two hundred fifty-seven billion, forty-five million, nine hundred thirty-four thousand, six hundred twenty".