29938677961 has 2 divisors, whose sum is σ = 29938677962. Its totient is φ = 29938677960.

The previous prime is 29938677949. The next prime is 29938678013. The reversal of 29938677961 is 16977683992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23851713600 + 6086964361 = 154440^2 + 78019^2 .

It is a cyclic number.

It is not a de Polignac number, because 29938677961 - 2¹⁵ = 29938645193 is a prime.

It is not a weakly prime, because it can be changed into another prime (29938677931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14969338980 + 14969338981.

It is an arithmetic number, because the mean of its divisors is an integer number (14969338981).

Almost surely, 2^29938677961 is an apocalyptic number.

It is an amenable number.

29938677961 is a deficient number, since it is larger than the sum of its proper divisors (1).

29938677961 is an equidigital number, since it uses as much as digits as its factorization.

29938677961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61725888, while the sum is 67.

The spelling of 29938677961 in words is "twenty-nine billion, nine hundred thirty-eight million, six hundred seventy-seven thousand, nine hundred sixty-one".