149761870417 has 2 divisors, whose sum is σ = 149761870418. Its totient is φ = 149761870416.

The previous prime is 149761870409. The next prime is 149761870439. The reversal of 149761870417 is 714078167941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88928607681 + 60833262736 = 298209^2 + 246644^2 .

It is a cyclic number.

It is not a de Polignac number, because 149761870417 - 2³ = 149761870409 is a prime.

It is not a weakly prime, because it can be changed into another prime (149761870487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74880935208 + 74880935209.

It is an arithmetic number, because the mean of its divisors is an integer number (74880935209).

Almost surely, 2^149761870417 is an apocalyptic number.

It is an amenable number.

149761870417 is a deficient number, since it is larger than the sum of its proper divisors (1).

149761870417 is an equidigital number, since it uses as much as digits as its factorization.

149761870417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2370816, while the sum is 55.

The spelling of 149761870417 in words is "one hundred forty-nine billion, seven hundred sixty-one million, eight hundred seventy thousand, four hundred seventeen".