151098997921 has 2 divisors, whose sum is σ = 151098997922. Its totient is φ = 151098997920.

The previous prime is 151098997879. The next prime is 151098997939. The reversal of 151098997921 is 129799890151.

It is a happy number.

151098997921 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., 123123090321 + 27975907600 = 350889^2 + 167260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151098997921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 151098997921.

It is not a weakly prime, because it can be changed into another prime (151098997961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75549498960 + 75549498961.

It is an arithmetic number, because the mean of its divisors is an integer number (75549498961).

Almost surely, 2^151098997921 is an apocalyptic number.

It is an amenable number.

151098997921 is a deficient number, since it is larger than the sum of its proper divisors (1).

151098997921 is an equidigital number, since it uses as much as digits as its factorization.

151098997921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3674160, while the sum is 61.

The spelling of 151098997921 in words is "one hundred fifty-one billion, ninety-eight million, nine hundred ninety-seven thousand, nine hundred twenty-one".