42697808651 has 16 divisors (see below), whose sum is σ = 45789559200. Its totient is φ = 39671943168.

The previous prime is 42697808623. The next prime is 42697808663. The reversal of 42697808651 is 15680879624.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42697808651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42697808851) 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, 950915 + ... + 994803.

It is an arithmetic number, because the mean of its divisors is an integer number (2861847450).

Almost surely, 2^42697808651 is an apocalyptic number.

42697808651 is a deficient number, since it is larger than the sum of its proper divisors (3091750549).

42697808651 is a wasteful number, since it uses less digits than its factorization.

42697808651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44638.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 42697808651 in words is "forty-two billion, six hundred ninety-seven million, eight hundred eight thousand, six hundred fifty-one".