29915161601 has 8 divisors (see below), whose sum is σ = 32219292840. Its totient is φ = 27611453952.

The previous prime is 29915161571. The next prime is 29915161609. The reversal of 29915161601 is 10616151992.

It is a Cunningham number, because it is equal to 172960²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 4425442576 + 25489719025 = 66524^2 + 159655^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 29915161601 - 2¹⁴ = 29915145217 is a prime.

It is a super-2 number, since 2×29915161601² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29915161609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49211 + ... + 249503.

It is an arithmetic number, because the mean of its divisors is an integer number (4027411605).

Almost surely, 2^29915161601 is an apocalyptic number.

It is an amenable number.

29915161601 is a deficient number, since it is larger than the sum of its proper divisors (2304131239).

29915161601 is a wasteful number, since it uses less digits than its factorization.

29915161601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211795.

The product of its (nonzero) digits is 29160, while the sum is 41.

The spelling of 29915161601 in words is "twenty-nine billion, nine hundred fifteen million, one hundred sixty-one thousand, six hundred one".