253055401639 has 2 divisors, whose sum is σ = 253055401640. Its totient is φ = 253055401638.

The previous prime is 253055401481. The next prime is 253055401673. The reversal of 253055401639 is 936104550352.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253055401639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 253055401595 and 253055401604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253055405639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126527700819 + 126527700820.

It is an arithmetic number, because the mean of its divisors is an integer number (126527700820).

Almost surely, 2^253055401639 is an apocalyptic number.

253055401639 is a deficient number, since it is larger than the sum of its proper divisors (1).

253055401639 is an equidigital number, since it uses as much as digits as its factorization.

253055401639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486000, while the sum is 43.

The spelling of 253055401639 in words is "two hundred fifty-three billion, fifty-five million, four hundred one thousand, six hundred thirty-nine".