10642391866 has 8 divisors (see below), whose sum is σ = 15966788544. Its totient is φ = 5320129020.

The previous prime is 10642391863. The next prime is 10642391873. The reversal of 10642391866 is 66819324601.

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

It is a super-2 number, since 2×10642391866² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10642391861) 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, 520930 + ... + 540973.

It is an arithmetic number, because the mean of its divisors is an integer number (1995848568).

Almost surely, 2^10642391866 is an apocalyptic number.

10642391866 is a deficient number, since it is larger than the sum of its proper divisors (5324396678).

10642391866 is a wasteful number, since it uses less digits than its factorization.

10642391866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066916.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 10642391866 in words is "ten billion, six hundred forty-two million, three hundred ninety-one thousand, eight hundred sixty-six".