253206136037 has 2 divisors, whose sum is σ = 253206136038. Its totient is φ = 253206136036.

The previous prime is 253206136033. The next prime is 253206136049. The reversal of 253206136037 is 730631602352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193530486241 + 59675649796 = 439921^2 + 244286^2 .

It is a cyclic number.

It is not a de Polignac number, because 253206136037 - 2² = 253206136033 is a prime.

It is a super-2 number, since 2×253206136037² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253206136033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126603068018 + 126603068019.

It is an arithmetic number, because the mean of its divisors is an integer number (126603068019).

Almost surely, 2^253206136037 is an apocalyptic number.

It is an amenable number.

253206136037 is a deficient number, since it is larger than the sum of its proper divisors (1).

253206136037 is an equidigital number, since it uses as much as digits as its factorization.

253206136037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 38.

Adding to 253206136037 its reverse (730631602352), we get a palindrome (983837738389).

The spelling of 253206136037 in words is "two hundred fifty-three billion, two hundred six million, one hundred thirty-six thousand, thirty-seven".