149518053200921 has 2 divisors, whose sum is σ = 149518053200922. Its totient is φ = 149518053200920.

The previous prime is 149518053200759. The next prime is 149518053200941. The reversal of 149518053200921 is 129002350815941.

149518053200921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106491275330521 + 43026777870400 = 10319461^2 + 6559480^2 .

It is a cyclic number.

It is not a de Polignac number, because 149518053200921 - 2¹⁸ = 149518052938777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149518053200921.

It is not a weakly prime, because it can be changed into another prime (149518053200941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74759026600460 + 74759026600461.

It is an arithmetic number, because the mean of its divisors is an integer number (74759026600461).

Almost surely, 2^{149518053200921} is an apocalyptic number.

It is an amenable number.

149518053200921 is a deficient number, since it is larger than the sum of its proper divisors (1).

149518053200921 is an equidigital number, since it uses as much as digits as its factorization.

149518053200921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 50.

The spelling of 149518053200921 in words is "one hundred forty-nine trillion, five hundred eighteen billion, fifty-three million, two hundred thousand, nine hundred twenty-one".