256735537652 has 24 divisors (see below), whose sum is σ = 490147604352. Its totient is φ = 116694132800.

The previous prime is 256735537649. The next prime is 256735537679.

256735537652 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1589288 + ... + 1743360.

It is an arithmetic number, because the mean of its divisors is an integer number (20422816848).

Almost surely, 2^256735537652 is an apocalyptic number.

256735537652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

256735537652 is a deficient number, since it is larger than the sum of its proper divisors (233412066700).

256735537652 is a wasteful number, since it uses less digits than its factorization.

256735537652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191959 (or 191957 counting only the distinct ones).

The product of its digits is 39690000, while the sum is 56.

The spelling of 256735537652 in words is "two hundred fifty-six billion, seven hundred thirty-five million, five hundred thirty-seven thousand, six hundred fifty-two".