253333305381 has 16 divisors (see below), whose sum is σ = 365270037440. Its totient is φ = 155250535680.

The previous prime is 253333305377. The next prime is 253333305403. The reversal of 253333305381 is 183503333352.

It is not a de Polignac number, because 253333305381 - 2² = 253333305377 is a prime.

It is a super-2 number, since 2×253333305381² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253333306381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13467211 + ... + 13486008.

It is an arithmetic number, because the mean of its divisors is an integer number (22829377340).

Almost surely, 2^253333305381 is an apocalyptic number.

It is an amenable number.

253333305381 is a deficient number, since it is larger than the sum of its proper divisors (111936732059).

253333305381 is a wasteful number, since it uses less digits than its factorization.

253333305381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26953476.

The product of its (nonzero) digits is 291600, while the sum is 39.

The spelling of 253333305381 in words is "two hundred fifty-three billion, three hundred thirty-three million, three hundred five thousand, three hundred eighty-one".