256345365530 has 32 divisors (see below), whose sum is σ = 471189394944. Its totient is φ = 100376276416.

The previous prime is 256345365491. The next prime is 256345365539. The reversal of 256345365530 is 35563543652.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (256345365539) 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, 311114 + ... + 780693.

It is an arithmetic number, because the mean of its divisors is an integer number (14724668592).

Almost surely, 2^256345365530 is an apocalyptic number.

256345365530 is a deficient number, since it is larger than the sum of its proper divisors (214844029414).

256345365530 is a wasteful number, since it uses less digits than its factorization.

256345365530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092310.

The product of its (nonzero) digits is 4860000, while the sum is 47.

The spelling of 256345365530 in words is "two hundred fifty-six billion, three hundred forty-five million, three hundred sixty-five thousand, five hundred thirty".