921425904287 has 8 divisors (see below), whose sum is σ = 1061349974016. Its totient is φ = 783574783992.

The previous prime is 921425904271. The next prime is 921425904293. The reversal of 921425904287 is 782409524129.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 921425904287 - 2⁴ = 921425904271 is a prime.

It is a super-2 number, since 2×921425904287² (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 (921425004287) 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 7 ways as a sum of consecutive naturals, for example, 518236403 + ... + 518238180.

It is an arithmetic number, because the mean of its divisors is an integer number (132668746752).

Almost surely, 2^921425904287 is an apocalyptic number.

921425904287 is a deficient number, since it is larger than the sum of its proper divisors (139924069729).

921425904287 is a wasteful number, since it uses less digits than its factorization.

921425904287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036474717.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 921425904287 in words is "nine hundred twenty-one billion, four hundred twenty-five million, nine hundred four thousand, two hundred eighty-seven".