69949930121 has 2 divisors, whose sum is σ = 69949930122. Its totient is φ = 69949930120.

The previous prime is 69949930109. The next prime is 69949930139. The reversal of 69949930121 is 12103994996.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53112272521 + 16837657600 = 230461^2 + 129760^2 .

It is a cyclic number.

It is not a de Polignac number, because 69949930121 - 2¹⁰ = 69949929097 is a prime.

It is not a weakly prime, because it can be changed into another prime (69949930151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34974965060 + 34974965061.

It is an arithmetic number, because the mean of its divisors is an integer number (34974965061).

Almost surely, 2^69949930121 is an apocalyptic number.

It is an amenable number.

69949930121 is a deficient number, since it is larger than the sum of its proper divisors (1).

69949930121 is an equidigital number, since it uses as much as digits as its factorization.

69949930121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 944784, while the sum is 53.

The spelling of 69949930121 in words is "sixty-nine billion, nine hundred forty-nine million, nine hundred thirty thousand, one hundred twenty-one".