157826378893 has 2 divisors, whose sum is σ = 157826378894. Its totient is φ = 157826378892.

The previous prime is 157826378849. The next prime is 157826378921. The reversal of 157826378893 is 398873628751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110621429604 + 47204949289 = 332598^2 + 217267^2 .

It is a cyclic number.

It is not a de Polignac number, because 157826378893 - 2¹³ = 157826370701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157826378293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78913189446 + 78913189447.

It is an arithmetic number, because the mean of its divisors is an integer number (78913189447).

Almost surely, 2^157826378893 is an apocalyptic number.

It is an amenable number.

157826378893 is a deficient number, since it is larger than the sum of its proper divisors (1).

157826378893 is an equidigital number, since it uses as much as digits as its factorization.

157826378893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 121927680, while the sum is 67.

The spelling of 157826378893 in words is "one hundred fifty-seven billion, eight hundred twenty-six million, three hundred seventy-eight thousand, eight hundred ninety-three".