149800404097 has 2 divisors, whose sum is σ = 149800404098. Its totient is φ = 149800404096.

The previous prime is 149800404079. The next prime is 149800404157. The reversal of 149800404097 is 790404008941.

Together with previous prime (149800404079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101072490561 + 48727913536 = 317919^2 + 220744^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149800404097 is a prime.

It is a super-2 number, since 2×149800404097² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (149800404077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74900202048 + 74900202049.

It is an arithmetic number, because the mean of its divisors is an integer number (74900202049).

Almost surely, 2^149800404097 is an apocalyptic number.

It is an amenable number.

149800404097 is a deficient number, since it is larger than the sum of its proper divisors (1).

149800404097 is an equidigital number, since it uses as much as digits as its factorization.

149800404097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 149800404097 in words is "one hundred forty-nine billion, eight hundred million, four hundred four thousand, ninety-seven".