29899045872061 has 2 divisors, whose sum is σ = 29899045872062. Its totient is φ = 29899045872060.

The previous prime is 29899045872053. The next prime is 29899045872119. The reversal of 29899045872061 is 16027854099892.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23083844839225 + 6815201032836 = 4804565^2 + 2610594^2 .

It is a cyclic number.

It is not a de Polignac number, because 29899045872061 - 2³ = 29899045872053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29899045872001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14949522936030 + 14949522936031.

It is an arithmetic number, because the mean of its divisors is an integer number (14949522936031).

Almost surely, 2^{29899045872061} is an apocalyptic number.

It is an amenable number.

29899045872061 is a deficient number, since it is larger than the sum of its proper divisors (1).

29899045872061 is an equidigital number, since it uses as much as digits as its factorization.

29899045872061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 156764160, while the sum is 70.

The spelling of 29899045872061 in words is "twenty-nine trillion, eight hundred ninety-nine billion, forty-five million, eight hundred seventy-two thousand, sixty-one".