29906221871413 has 4 divisors (see below), whose sum is σ = 29906344383340. Its totient is φ = 29906099359488.

The previous prime is 29906221871359. The next prime is 29906221871483. The reversal of 29906221871413 is 31417812260992.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17353039827204 + 12553182044209 = 4165698^2 + 3543047^2 .

It is a cyclic number.

It is not a de Polignac number, because 29906221871413 - 2⁹ = 29906221870901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29906221871483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60889068 + ... + 61378261.

It is an arithmetic number, because the mean of its divisors is an integer number (7476586095835).

Almost surely, 2^{29906221871413} is an apocalyptic number.

It is an amenable number.

29906221871413 is a deficient number, since it is larger than the sum of its proper divisors (122511927).

29906221871413 is a wasteful number, since it uses less digits than its factorization.

29906221871413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122511926.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 29906221871413 in words is "twenty-nine trillion, nine hundred six billion, two hundred twenty-one million, eight hundred seventy-one thousand, four hundred thirteen".