1557023057700 has 144 divisors (see below), whose sum is σ = 4965197248704. Its totient is φ = 373568716800.

The previous prime is 1557023057647. The next prime is 1557023057701. The reversal of 1557023057700 is 77503207551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1557023057701) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2111989 + ... + 2752188.

Almost surely, 2^{1557023057700} is an apocalyptic number.

1557023057700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1557023057700 is an abundant number, since it is smaller than the sum of its proper divisors (3408174191004).

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

1557023057700 is a wasteful number, since it uses less digits than its factorization.

1557023057700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4864302 (or 4864295 counting only the distinct ones).

The product of its (nonzero) digits is 257250, while the sum is 42.

The spelling of 1557023057700 in words is "one trillion, five hundred fifty-seven billion, twenty-three million, fifty-seven thousand, seven hundred".