32166615623666 has 4 divisors (see below), whose sum is σ = 48249923435502. Its totient is φ = 16083307811832.

The previous prime is 32166615623633. The next prime is 32166615623699. The reversal of 32166615623666 is 66632651666123.

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

It is an interprime number because it is at equal distance from previous prime (32166615623633) and next prime (32166615623699).

It can be written as a sum of positive squares in only one way, i.e., 32127686360641 + 38929263025 = 5668129^2 + 197305^2 .

It is a super-2 number, since 2×32166615623666² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8041653905915 + ... + 8041653905918.

Almost surely, 2^{32166615623666} is an apocalyptic number.

32166615623666 is a deficient number, since it is larger than the sum of its proper divisors (16083307811836).

32166615623666 is a wasteful number, since it uses less digits than its factorization.

32166615623666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16083307811835.

The product of its digits is 50388480, while the sum is 59.

The spelling of 32166615623666 in words is "thirty-two trillion, one hundred sixty-six billion, six hundred fifteen million, six hundred twenty-three thousand, six hundred sixty-six".