920836688261 has 32 divisors (see below), whose sum is σ = 1121764267008. Its totient is φ = 739433410560.

The previous prime is 920836688251. The next prime is 920836688263. The reversal of 920836688261 is 162886638029.

It is a cyclic number.

It is not a de Polignac number, because 920836688261 - 2⁶ = 920836688197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 920836688261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920836688263) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70901 + ... + 1358933.

It is an arithmetic number, because the mean of its divisors is an integer number (35055133344).

Almost surely, 2^920836688261 is an apocalyptic number.

It is an amenable number.

920836688261 is a deficient number, since it is larger than the sum of its proper divisors (200927578747).

920836688261 is a wasteful number, since it uses less digits than its factorization.

920836688261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288181.

The product of its (nonzero) digits is 11943936, while the sum is 59.

The spelling of 920836688261 in words is "nine hundred twenty billion, eight hundred thirty-six million, six hundred eighty-eight thousand, two hundred sixty-one".