921708334261 has 24 divisors (see below), whose sum is σ = 1126340609760. Its totient is φ = 746790408000.

The previous prime is 921708334249. The next prime is 921708334307. The reversal of 921708334261 is 162433807129.

It is not a de Polignac number, because 921708334261 - 2⁵ = 921708334229 is a prime.

It is a super-2 number, since 2×921708334261² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921708334201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8494515 + ... + 8602336.

It is an arithmetic number, because the mean of its divisors is an integer number (46930858740).

Almost surely, 2^921708334261 is an apocalyptic number.

It is an amenable number.

921708334261 is a deficient number, since it is larger than the sum of its proper divisors (204632275499).

921708334261 is a wasteful number, since it uses less digits than its factorization.

921708334261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17096917 (or 17096904 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 921708334261 in words is "nine hundred twenty-one billion, seven hundred eight million, three hundred thirty-four thousand, two hundred sixty-one".