866994429637 has 16 divisors (see below), whose sum is σ = 996936837120. Its totient is φ = 738574903728.

The previous prime is 866994429629. The next prime is 866994429643. The reversal of 866994429637 is 736924499668.

It is a cyclic number.

It is not a de Polignac number, because 866994429637 - 2³ = 866994429629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 866994429637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866994429617) 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, 8067664 + ... + 8174422.

It is an arithmetic number, because the mean of its divisors is an integer number (62308552320).

Almost surely, 2^866994429637 is an apocalyptic number.

It is an amenable number.

866994429637 is a deficient number, since it is larger than the sum of its proper divisors (129942407483).

866994429637 is a wasteful number, since it uses less digits than its factorization.

866994429637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113880.

The product of its digits is 846526464, while the sum is 73.

The spelling of 866994429637 in words is "eight hundred sixty-six billion, nine hundred ninety-four million, four hundred twenty-nine thousand, six hundred thirty-seven".