29139276977 has 2 divisors, whose sum is σ = 29139276978. Its totient is φ = 29139276976.

The previous prime is 29139276919. The next prime is 29139277043. The reversal of 29139276977 is 77967293192.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18265792801 + 10873484176 = 135151^2 + 104276^2 .

It is a cyclic number.

It is not a de Polignac number, because 29139276977 - 2⁶ = 29139276913 is a prime.

It is not a weakly prime, because it can be changed into another prime (29139276277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14569638488 + 14569638489.

It is an arithmetic number, because the mean of its divisors is an integer number (14569638489).

Almost surely, 2^29139276977 is an apocalyptic number.

It is an amenable number.

29139276977 is a deficient number, since it is larger than the sum of its proper divisors (1).

29139276977 is an equidigital number, since it uses as much as digits as its factorization.

29139276977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18003384, while the sum is 62.

The spelling of 29139276977 in words is "twenty-nine billion, one hundred thirty-nine million, two hundred seventy-six thousand, nine hundred seventy-seven".