29866893457 has 2 divisors, whose sum is σ = 29866893458. Its totient is φ = 29866893456.

The previous prime is 29866893451. The next prime is 29866893467. The reversal of 29866893457 is 75439866892.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22923171216 + 6943722241 = 151404^2 + 83329^2 .

It is a cyclic number.

It is not a de Polignac number, because 29866893457 - 2²⁷ = 29732675729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 29866893392 and 29866893401.

It is not a weakly prime, because it can be changed into another prime (29866893451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14933446728 + 14933446729.

It is an arithmetic number, because the mean of its divisors is an integer number (14933446729).

Almost surely, 2^29866893457 is an apocalyptic number.

It is an amenable number.

29866893457 is a deficient number, since it is larger than the sum of its proper divisors (1).

29866893457 is an equidigital number, since it uses as much as digits as its factorization.

29866893457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 156764160, while the sum is 67.

The spelling of 29866893457 in words is "twenty-nine billion, eight hundred sixty-six million, eight hundred ninety-three thousand, four hundred fifty-seven".