157390090243 has 2 divisors, whose sum is σ = 157390090244. Its totient is φ = 157390090242.

The previous prime is 157390090219. The next prime is 157390090289. The reversal of 157390090243 is 342090093751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157390090243 - 2⁵ = 157390090211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157390090243.

It is not a weakly prime, because it can be changed into another prime (157390090343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78695045121 + 78695045122.

It is an arithmetic number, because the mean of its divisors is an integer number (78695045122).

Almost surely, 2^157390090243 is an apocalyptic number.

157390090243 is a deficient number, since it is larger than the sum of its proper divisors (1).

157390090243 is an equidigital number, since it uses as much as digits as its factorization.

157390090243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 43.

The spelling of 157390090243 in words is "one hundred fifty-seven billion, three hundred ninety million, ninety thousand, two hundred forty-three".