42664877866 has 32 divisors (see below), whose sum is σ = 74671426368. Its totient is φ = 18102147840.

The previous prime is 42664877863. The next prime is 42664877881. The reversal of 42664877866 is 66877846624.

It is a junction number, because it is equal to n+sod(n) for n = 42664877798 and 42664877807.

It is not an unprimeable number, because it can be changed into a prime (42664877863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1103400 + ... + 1141411.

It is an arithmetic number, because the mean of its divisors is an integer number (2333482074).

Almost surely, 2^42664877866 is an apocalyptic number.

42664877866 is a deficient number, since it is larger than the sum of its proper divisors (32006548502).

42664877866 is a wasteful number, since it uses less digits than its factorization.

42664877866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244886.

The product of its digits is 130056192, while the sum is 64.

The spelling of 42664877866 in words is "forty-two billion, six hundred sixty-four million, eight hundred seventy-seven thousand, eight hundred sixty-six".