2117066661507 has 64 divisors (see below), whose sum is σ = 3253891092480. Its totient is φ = 1199354010624.

The previous prime is 2117066661473. The next prime is 2117066661539. The reversal of 2117066661507 is 7051666607112.

It is not a de Polignac number, because 2117066661507 - 2¹⁴ = 2117066645123 is a prime.

It is a super-2 number, since 2×2117066661507² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2117066661007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1774573303 + ... + 1774574495.

It is an arithmetic number, because the mean of its divisors is an integer number (50842048320).

Almost surely, 2^{2117066661507} is an apocalyptic number.

2117066661507 is a deficient number, since it is larger than the sum of its proper divisors (1136824430973).

2117066661507 is a wasteful number, since it uses less digits than its factorization.

2117066661507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2692.

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 2117066661507 in words is "two trillion, one hundred seventeen billion, sixty-six million, six hundred sixty-one thousand, five hundred seven".