157070018499 has 4 divisors (see below), whose sum is σ = 209426691336. Its totient is φ = 104713345664.

The previous prime is 157070018437. The next prime is 157070018509. The reversal of 157070018499 is 994810070751.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 157070018499 - 2²⁴ = 157053241283 is a prime.

It is a super-2 number, since 2×157070018499² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157070018099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26178336414 + ... + 26178336419.

It is an arithmetic number, because the mean of its divisors is an integer number (52356672834).

Almost surely, 2^157070018499 is an apocalyptic number.

157070018499 is a deficient number, since it is larger than the sum of its proper divisors (52356672837).

157070018499 is an equidigital number, since it uses as much as digits as its factorization.

157070018499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52356672836.

The product of its (nonzero) digits is 635040, while the sum is 51.

The spelling of 157070018499 in words is "one hundred fifty-seven billion, seventy million, eighteen thousand, four hundred ninety-nine".