1557734735157 has 8 divisors (see below), whose sum is σ = 2098391808576. Its totient is φ = 1027783742592.

The previous prime is 1557734735147. The next prime is 1557734735177. The reversal of 1557734735157 is 7515374377551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1557734735157 - 2¹² = 1557734731061 is a prime.

It is a super-2 number, since 2×1557734735157² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1557734735157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557734735147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2676519873 + ... + 2676520454.

It is an arithmetic number, because the mean of its divisors is an integer number (262298976072).

Almost surely, 2^{1557734735157} is an apocalyptic number.

It is an amenable number.

1557734735157 is a deficient number, since it is larger than the sum of its proper divisors (540657073419).

1557734735157 is an equidigital number, since it uses as much as digits as its factorization.

1557734735157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5353040427.

The product of its digits is 54022500, while the sum is 60.

The spelling of 1557734735157 in words is "one trillion, five hundred fifty-seven billion, seven hundred thirty-four million, seven hundred thirty-five thousand, one hundred fifty-seven".