29972866493 has 2 divisors, whose sum is σ = 29972866494. Its totient is φ = 29972866492.

The previous prime is 29972866477. The next prime is 29972866513. The reversal of 29972866493 is 39466827992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27490634809 + 2482231684 = 165803^2 + 49822^2 .

It is a cyclic number.

It is not a de Polignac number, because 29972866493 - 2⁴ = 29972866477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29972866423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14986433246 + 14986433247.

It is an arithmetic number, because the mean of its divisors is an integer number (14986433247).

Almost surely, 2^29972866493 is an apocalyptic number.

It is an amenable number.

29972866493 is a deficient number, since it is larger than the sum of its proper divisors (1).

29972866493 is an equidigital number, since it uses as much as digits as its factorization.

29972866493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70543872, while the sum is 65.

The spelling of 29972866493 in words is "twenty-nine billion, nine hundred seventy-two million, eight hundred sixty-six thousand, four hundred ninety-three".