290666172105 has 24 divisors (see below), whose sum is σ = 510723033288. Its totient is φ = 152898368256.

The previous prime is 290666172073. The next prime is 290666172107. The reversal of 290666172105 is 501271666092.

It can be written as a sum of positive squares in 4 ways, for example, as 10457925696 + 280208246409 = 102264^2 + 529347^2 .

It is not a de Polignac number, because 290666172105 - 2⁵ = 290666172073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (290666172107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44238142 + ... + 44244711.

It is an arithmetic number, because the mean of its divisors is an integer number (21280126387).

Almost surely, 2^290666172105 is an apocalyptic number.

It is an amenable number.

290666172105 is a deficient number, since it is larger than the sum of its proper divisors (220056861183).

290666172105 is a wasteful number, since it uses less digits than its factorization.

290666172105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88482937 (or 88482934 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 290666172105 in words is "two hundred ninety billion, six hundred sixty-six million, one hundred seventy-two thousand, one hundred five".