29139494693 has 2 divisors, whose sum is σ = 29139494694. Its totient is φ = 29139494692.

The previous prime is 29139494663. The next prime is 29139494701. The reversal of 29139494693 is 39649493192.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27197946724 + 1941547969 = 164918^2 + 44063^2 .

It is a cyclic number.

It is not a de Polignac number, because 29139494693 - 2³² = 24844527397 is a prime.

It is a super-2 number, since 2×29139494693² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29139494663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14569747346 + 14569747347.

It is an arithmetic number, because the mean of its divisors is an integer number (14569747347).

Almost surely, 2^29139494693 is an apocalyptic number.

It is an amenable number.

29139494693 is a deficient number, since it is larger than the sum of its proper divisors (1).

29139494693 is an equidigital number, since it uses as much as digits as its factorization.

29139494693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11337408, while the sum is 59.

The spelling of 29139494693 in words is "twenty-nine billion, one hundred thirty-nine million, four hundred ninety-four thousand, six hundred ninety-three".