256650548620 has 48 divisors (see below), whose sum is σ = 546472106208. Its totient is φ = 101231147520.

The previous prime is 256650548603. The next prime is 256650548629. The reversal of 256650548620 is 26845056652.

It is a super-3 number, since 3×256650548620³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (256650548629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7439010 + ... + 7473430.

It is an arithmetic number, because the mean of its divisors is an integer number (11384835546).

Almost surely, 2^256650548620 is an apocalyptic number.

256650548620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256650548620 is an abundant number, since it is smaller than the sum of its proper divisors (289821557588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256650548620 is a wasteful number, since it uses less digits than its factorization.

256650548620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39610 (or 39608 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 49.

The spelling of 256650548620 in words is "two hundred fifty-six billion, six hundred fifty million, five hundred forty-eight thousand, six hundred twenty".