29455894121 has 2 divisors, whose sum is σ = 29455894122. Its totient is φ = 29455894120.

The previous prime is 29455894103. The next prime is 29455894157. The reversal of 29455894121 is 12149855492.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21298191721 + 8157702400 = 145939^2 + 90320^2 .

It is a cyclic number.

It is not a de Polignac number, because 29455894121 - 2⁶ = 29455894057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29455894121.

It is not a weakly prime, because it can be changed into another prime (29455894421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14727947060 + 14727947061.

It is an arithmetic number, because the mean of its divisors is an integer number (14727947061).

Almost surely, 2^29455894121 is an apocalyptic number.

It is an amenable number.

29455894121 is a deficient number, since it is larger than the sum of its proper divisors (1).

29455894121 is an equidigital number, since it uses as much as digits as its factorization.

29455894121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 50.

The spelling of 29455894121 in words is "twenty-nine billion, four hundred fifty-five million, eight hundred ninety-four thousand, one hundred twenty-one".