256734145500353 has 4 divisors (see below), whose sum is σ = 270246468947760. Its totient is φ = 243221822052948.

The previous prime is 256734145500299. The next prime is 256734145500361. The reversal of 256734145500353 is 353005541437652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 256734145500353 - 2⁸ = 256734145500097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256734145500295 and 256734145500304.

It is not an unprimeable number, because it can be changed into a prime (256734145560353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6756161723675 + ... + 6756161723712.

It is an arithmetic number, because the mean of its divisors is an integer number (67561617236940).

Almost surely, 2^{256734145500353} is an apocalyptic number.

It is an amenable number.

256734145500353 is a deficient number, since it is larger than the sum of its proper divisors (13512323447407).

256734145500353 is a wasteful number, since it uses less digits than its factorization.

256734145500353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13512323447406.

The product of its (nonzero) digits is 22680000, while the sum is 53.

The spelling of 256734145500353 in words is "two hundred fifty-six trillion, seven hundred thirty-four billion, one hundred forty-five million, five hundred thousand, three hundred fifty-three".