253209636123 has 16 divisors (see below), whose sum is σ = 347297771520. Its totient is φ = 163978706016.

The previous prime is 253209636089. The next prime is 253209636131. The reversal of 253209636123 is 321636902352.

It is not a de Polignac number, because 253209636123 - 2¹⁴ = 253209619739 is a prime.

It is a super-2 number, since 2×253209636123² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (253209636523) 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, 1773915 + ... + 1911332.

It is an arithmetic number, because the mean of its divisors is an integer number (21706110720).

Almost surely, 2^253209636123 is an apocalyptic number.

253209636123 is a deficient number, since it is larger than the sum of its proper divisors (94088135397).

253209636123 is a wasteful number, since it uses less digits than its factorization.

253209636123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685906.

The product of its (nonzero) digits is 349920, while the sum is 42.

The spelling of 253209636123 in words is "two hundred fifty-three billion, two hundred nine million, six hundred thirty-six thousand, one hundred twenty-three".