157643167704445 has 8 divisors (see below), whose sum is σ = 189259340268600. Its totient is φ = 126056174814720.

The previous prime is 157643167704413. The next prime is 157643167704497. The reversal of 157643167704445 is 544407761346751.

It can be written as a sum of positive squares in 4 ways, for example, as 15895427426649 + 141747740277796 = 3986907^2 + 11905786^2 .

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

It is not a de Polignac number, because 157643167704445 - 2⁵ = 157643167704413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7294906720 + ... + 7294928329.

It is an arithmetic number, because the mean of its divisors is an integer number (23657417533575).

Almost surely, 2^{157643167704445} is an apocalyptic number.

It is an amenable number.

157643167704445 is a deficient number, since it is larger than the sum of its proper divisors (31616172564155).

157643167704445 is a wasteful number, since it uses less digits than its factorization.

157643167704445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14589837215.

The product of its (nonzero) digits is 237081600, while the sum is 64.

The spelling of 157643167704445 in words is "one hundred fifty-seven trillion, six hundred forty-three billion, one hundred sixty-seven million, seven hundred four thousand, four hundred forty-five".