253282643378 has 6 divisors (see below), whose sum is σ = 379925032671. Its totient is φ = 126640965822.

The previous prime is 253282643371. The next prime is 253282643407. The reversal of 253282643378 is 873346282352.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 126641321689 + 126641321689 = 355867^2 + 355867^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=355867.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253282643371) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 533801 + ... + 889667.

Almost surely, 2^253282643378 is an apocalyptic number.

253282643378 is a deficient number, since it is larger than the sum of its proper divisors (126642389293).

253282643378 is an frugal number, since it uses more digits than its factorization.

253282643378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711736 (or 355869 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 53.

The spelling of 253282643378 in words is "two hundred fifty-three billion, two hundred eighty-two million, six hundred forty-three thousand, three hundred seventy-eight".