29802451961 has 2 divisors, whose sum is σ = 29802451962. Its totient is φ = 29802451960.

The previous prime is 29802451907. The next prime is 29802451999. The reversal of 29802451961 is 16915420892.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25770201961 + 4032250000 = 160531^2 + 63500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29802451961 is a prime.

It is a super-2 number, since 2×29802451961² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (29802450961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14901225980 + 14901225981.

It is an arithmetic number, because the mean of its divisors is an integer number (14901225981).

Almost surely, 2^29802451961 is an apocalyptic number.

It is an amenable number.

29802451961 is a deficient number, since it is larger than the sum of its proper divisors (1).

29802451961 is an equidigital number, since it uses as much as digits as its factorization.

29802451961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 29802451961 in words is "twenty-nine billion, eight hundred two million, four hundred fifty-one thousand, nine hundred sixty-one".