149971230457 has 2 divisors, whose sum is σ = 149971230458. Its totient is φ = 149971230456.

The previous prime is 149971230439. The next prime is 149971230469. The reversal of 149971230457 is 754032179941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99517535296 + 50453695161 = 315464^2 + 224619^2 .

It is a cyclic number.

It is not a de Polignac number, because 149971230457 - 2³⁵ = 115611492089 is a prime.

It is not a weakly prime, because it can be changed into another prime (149971230757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74985615228 + 74985615229.

It is an arithmetic number, because the mean of its divisors is an integer number (74985615229).

Almost surely, 2^149971230457 is an apocalyptic number.

It is an amenable number.

149971230457 is a deficient number, since it is larger than the sum of its proper divisors (1).

149971230457 is an equidigital number, since it uses as much as digits as its factorization.

149971230457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1905120, while the sum is 52.

It can be divided in two parts, 1499712 and 30457, that added together give a square (1530169 = 1237²).

The spelling of 149971230457 in words is "one hundred forty-nine billion, nine hundred seventy-one million, two hundred thirty thousand, four hundred fifty-seven".