253779929227 has 48 divisors (see below), whose sum is σ = 298094614560. Its totient is φ = 216035684480.

The previous prime is 253779929219. The next prime is 253779929237. The reversal of 253779929227 is 722929977352.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 253779929227 - 2³ = 253779929219 is a prime.

It is a super-2 number, since 2×253779929227² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253779929237) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1288222893 + ... + 1288223089.

It is an arithmetic number, because the mean of its divisors is an integer number (6210304470).

Almost surely, 2^253779929227 is an apocalyptic number.

253779929227 is a deficient number, since it is larger than the sum of its proper divisors (44314685333).

253779929227 is an frugal number, since it uses more digits than its factorization.

253779929227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 225 counting only the distinct ones).

The product of its digits is 60011280, while the sum is 64.

The spelling of 253779929227 in words is "two hundred fifty-three billion, seven hundred seventy-nine million, nine hundred twenty-nine thousand, two hundred twenty-seven".