253290385921 has 8 divisors (see below), whose sum is σ = 255896928000. Its totient is φ = 250696975632.

The previous prime is 253290385853. The next prime is 253290385961. The reversal of 253290385921 is 129583092352.

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

It is a cyclic number.

It is not a de Polignac number, because 253290385921 - 2¹⁹ = 253289861633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253290385961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3244171 + ... + 3321328.

It is an arithmetic number, because the mean of its divisors is an integer number (31987116000).

Almost surely, 2^253290385921 is an apocalyptic number.

It is an amenable number.

253290385921 is a deficient number, since it is larger than the sum of its proper divisors (2606542079).

253290385921 is a wasteful number, since it uses less digits than its factorization.

253290385921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6565895.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 253290385921 in words is "two hundred fifty-three billion, two hundred ninety million, three hundred eighty-five thousand, nine hundred twenty-one".