253480467857 has 2 divisors, whose sum is σ = 253480467858. Its totient is φ = 253480467856.

The previous prime is 253480467833. The next prime is 253480467973. The reversal of 253480467857 is 758764084352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127855589761 + 125624878096 = 357569^2 + 354436^2 .

It is a cyclic number.

It is not a de Polignac number, because 253480467857 - 2³² = 249185500561 is a prime.

It is a super-2 number, since 2×253480467857² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 253480467796 and 253480467805.

It is not a weakly prime, because it can be changed into another prime (253480467827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126740233928 + 126740233929.

It is an arithmetic number, because the mean of its divisors is an integer number (126740233929).

Almost surely, 2^253480467857 is an apocalyptic number.

It is an amenable number.

253480467857 is a deficient number, since it is larger than the sum of its proper divisors (1).

253480467857 is an equidigital number, since it uses as much as digits as its factorization.

253480467857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45158400, while the sum is 59.

The spelling of 253480467857 in words is "two hundred fifty-three billion, four hundred eighty million, four hundred sixty-seven thousand, eight hundred fifty-seven".