42897694636 has 12 divisors (see below), whose sum is σ = 75075035112. Its totient is φ = 21447684608.

The previous prime is 42897694603. The next prime is 42897694639. The reversal of 42897694636 is 63649679824.

It is not an unprimeable number, because it can be changed into a prime (42897694639) 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, 204850 + ... + 357433.

It is an arithmetic number, because the mean of its divisors is an integer number (6256252926).

Almost surely, 2^42897694636 is an apocalyptic number.

It is an amenable number.

42897694636 is a deficient number, since it is larger than the sum of its proper divisors (32177340476).

42897694636 is a wasteful number, since it uses less digits than its factorization.

42897694636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581360 (or 581358 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 64.

The spelling of 42897694636 in words is "forty-two billion, eight hundred ninety-seven million, six hundred ninety-four thousand, six hundred thirty-six".