157904797543 has 4 divisors (see below), whose sum is σ = 160128808848. Its totient is φ = 155680786240.

The previous prime is 157904797511. The next prime is 157904797571. The reversal of 157904797543 is 345797409751.

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 157904797543 - 2⁵ = 157904797511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157904797573) 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, 1112005546 + ... + 1112005687.

It is an arithmetic number, because the mean of its divisors is an integer number (40032202212).

Almost surely, 2^157904797543 is an apocalyptic number.

157904797543 is a deficient number, since it is larger than the sum of its proper divisors (2224011305).

157904797543 is an equidigital number, since it uses as much as digits as its factorization.

157904797543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224011304.

The product of its (nonzero) digits is 33339600, while the sum is 61.

The spelling of 157904797543 in words is "one hundred fifty-seven billion, nine hundred four million, seven hundred ninety-seven thousand, five hundred forty-three".