29997552729761 has 2 divisors, whose sum is σ = 29997552729762. Its totient is φ = 29997552729760.

The previous prime is 29997552729757. The next prime is 29997552729779. The reversal of 29997552729761 is 16792725579992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27378334169761 + 2619218560000 = 5232431^2 + 1618400^2 .

It is a cyclic number.

It is not a de Polignac number, because 29997552729761 - 2² = 29997552729757 is a prime.

It is not a weakly prime, because it can be changed into another prime (29997552729731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14998776364880 + 14998776364881.

It is an arithmetic number, because the mean of its divisors is an integer number (14998776364881).

Almost surely, 2^{29997552729761} is an apocalyptic number.

It is an amenable number.

29997552729761 is a deficient number, since it is larger than the sum of its proper divisors (1).

29997552729761 is an equidigital number, since it uses as much as digits as its factorization.

29997552729761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700507600, while the sum is 80.

The spelling of 29997552729761 in words is "twenty-nine trillion, nine hundred ninety-seven billion, five hundred fifty-two million, seven hundred twenty-nine thousand, seven hundred sixty-one".