29679339755557 has 2 divisors, whose sum is σ = 29679339755558. Its totient is φ = 29679339755556.

The previous prime is 29679339755497. The next prime is 29679339755579. The reversal of 29679339755557 is 75555793397692.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29217851865316 + 461487890241 = 5405354^2 + 679329^2 .

It is a cyclic number.

It is not a de Polignac number, because 29679339755557 - 2¹⁵ = 29679339722789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29679339759557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14839669877778 + 14839669877779.

It is an arithmetic number, because the mean of its divisors is an integer number (14839669877779).

Almost surely, 2^{29679339755557} is an apocalyptic number.

It is an amenable number.

29679339755557 is a deficient number, since it is larger than the sum of its proper divisors (1).

29679339755557 is an equidigital number, since it uses as much as digits as its factorization.

29679339755557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16878172500, while the sum is 82.

It can be divided in two parts, 2967933 and 9755557, that added together give a triangular number (12723490 = T₅₀₄₄).

The spelling of 29679339755557 in words is "twenty-nine trillion, six hundred seventy-nine billion, three hundred thirty-nine million, seven hundred fifty-five thousand, five hundred fifty-seven".