10420886691 has 6 divisors (see below), whose sum is σ = 15052391900. Its totient is φ = 6947257788.

The previous prime is 10420886687. The next prime is 10420886711. The reversal of 10420886691 is 19668802401.

10420886691 is a `hidden beast` number, since 1 + 0 + 420 + 88 + 66 + 91 = 666.

It is not a de Polignac number, because 10420886691 - 2² = 10420886687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10420886591) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 578938141 + ... + 578938158.

Almost surely, 2^10420886691 is an apocalyptic number.

10420886691 is a deficient number, since it is larger than the sum of its proper divisors (4631505209).

10420886691 is a wasteful number, since it uses less digits than its factorization.

10420886691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157876305 (or 1157876302 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 10420886691 in words is "ten billion, four hundred twenty million, eight hundred eighty-six thousand, six hundred ninety-one".