29621640757147 has 2 divisors, whose sum is σ = 29621640757148. Its totient is φ = 29621640757146.

The previous prime is 29621640757109. The next prime is 29621640757169. The reversal of 29621640757147 is 74175704612692.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 29621640757147 - 2¹¹ = 29621640755099 is a prime.

It is a super-2 number, since 2×29621640757147² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (29621640757187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14810820378573 + 14810820378574.

It is an arithmetic number, because the mean of its divisors is an integer number (14810820378574).

Almost surely, 2^{29621640757147} is an apocalyptic number.

29621640757147 is a deficient number, since it is larger than the sum of its proper divisors (1).

29621640757147 is an equidigital number, since it uses as much as digits as its factorization.

29621640757147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35562240, while the sum is 61.

The spelling of 29621640757147 in words is "twenty-nine trillion, six hundred twenty-one billion, six hundred forty million, seven hundred fifty-seven thousand, one hundred forty-seven".