157190019251 has 2 divisors, whose sum is σ = 157190019252. Its totient is φ = 157190019250.

The previous prime is 157190019247. The next prime is 157190019281. The reversal of 157190019251 is 152910091751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157190019251 - 2² = 157190019247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157190019199 and 157190019208.

It is not a weakly prime, because it can be changed into another prime (157190019281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78595009625 + 78595009626.

It is an arithmetic number, because the mean of its divisors is an integer number (78595009626).

Almost surely, 2^157190019251 is an apocalyptic number.

157190019251 is a deficient number, since it is larger than the sum of its proper divisors (1).

157190019251 is an equidigital number, since it uses as much as digits as its factorization.

157190019251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28350, while the sum is 41.

The spelling of 157190019251 in words is "one hundred fifty-seven billion, one hundred ninety million, nineteen thousand, two hundred fifty-one".