253533036438 has 24 divisors (see below), whose sum is σ = 599259904776. Its totient is φ = 76828192800.

The previous prime is 253533036403. The next prime is 253533036469. The reversal of 253533036438 is 834630335352.

253533036438 is a `hidden beast` number, since 2 + 53 + 533 + 0 + 3 + 64 + 3 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 253533036393 and 253533036402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 640234743 + ... + 640235138.

It is an arithmetic number, because the mean of its divisors is an integer number (24969162699).

Almost surely, 2^253533036438 is an apocalyptic number.

253533036438 is an abundant number, since it is smaller than the sum of its proper divisors (345726868338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253533036438 is a wasteful number, since it uses less digits than its factorization.

253533036438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280469900 (or 1280469897 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 45.

The spelling of 253533036438 in words is "two hundred fifty-three billion, five hundred thirty-three million, thirty-six thousand, four hundred thirty-eight".