149956298477 has 2 divisors, whose sum is σ = 149956298478. Its totient is φ = 149956298476.

The previous prime is 149956298473. The next prime is 149956298489. The reversal of 149956298477 is 774892659941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137814682756 + 12141615721 = 371234^2 + 110189^2 .

It is a cyclic number.

It is not a de Polignac number, because 149956298477 - 2² = 149956298473 is a prime.

It is a super-2 number, since 2×149956298477² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 149956298477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149956298473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74978149238 + 74978149239.

It is an arithmetic number, because the mean of its divisors is an integer number (74978149239).

Almost surely, 2^149956298477 is an apocalyptic number.

It is an amenable number.

149956298477 is a deficient number, since it is larger than the sum of its proper divisors (1).

149956298477 is an equidigital number, since it uses as much as digits as its factorization.

149956298477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 274337280, while the sum is 71.

The spelling of 149956298477 in words is "one hundred forty-nine billion, nine hundred fifty-six million, two hundred ninety-eight thousand, four hundred seventy-seven".