157202223649 has 2 divisors, whose sum is σ = 157202223650. Its totient is φ = 157202223648.

The previous prime is 157202223641. The next prime is 157202223683. The reversal of 157202223649 is 946322202751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93259998225 + 63942225424 = 305385^2 + 252868^2 .

It is a cyclic number.

It is not a de Polignac number, because 157202223649 - 2³ = 157202223641 is a prime.

It is not a weakly prime, because it can be changed into another prime (157202223641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78601111824 + 78601111825.

It is an arithmetic number, because the mean of its divisors is an integer number (78601111825).

Almost surely, 2^157202223649 is an apocalyptic number.

It is an amenable number.

157202223649 is a deficient number, since it is larger than the sum of its proper divisors (1).

157202223649 is an equidigital number, since it uses as much as digits as its factorization.

157202223649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 157202223649 in words is "one hundred fifty-seven billion, two hundred two million, two hundred twenty-three thousand, six hundred forty-nine".