153220099961 has 2 divisors, whose sum is σ = 153220099962. Its totient is φ = 153220099960.

The previous prime is 153220099943. The next prime is 153220100021. The reversal of 153220099961 is 169990022351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142388494336 + 10831605625 = 377344^2 + 104075^2 .

It is a cyclic number.

It is not a de Polignac number, because 153220099961 - 2¹⁰ = 153220098937 is a prime.

It is not a weakly prime, because it can be changed into another prime (153220099931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76610049980 + 76610049981.

It is an arithmetic number, because the mean of its divisors is an integer number (76610049981).

Almost surely, 2^153220099961 is an apocalyptic number.

It is an amenable number.

153220099961 is a deficient number, since it is larger than the sum of its proper divisors (1).

153220099961 is an equidigital number, since it uses as much as digits as its factorization.

153220099961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 262440, while the sum is 47.

The spelling of 153220099961 in words is "one hundred fifty-three billion, two hundred twenty million, ninety-nine thousand, nine hundred sixty-one".