268860954551 has 4 divisors (see below), whose sum is σ = 307269662352. Its totient is φ = 230452246752.

The previous prime is 268860954521. The next prime is 268860954553. The reversal of 268860954551 is 155459068862.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-268860954551 is a prime.

It is a super-2 number, since 2×268860954551² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268860954553) 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, 19204353890 + ... + 19204353903.

It is an arithmetic number, because the mean of its divisors is an integer number (76817415588).

Almost surely, 2^268860954551 is an apocalyptic number.

268860954551 is a deficient number, since it is larger than the sum of its proper divisors (38408707801).

268860954551 is an equidigital number, since it uses as much as digits as its factorization.

268860954551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38408707800.

The product of its (nonzero) digits is 20736000, while the sum is 59.

The spelling of 268860954551 in words is "two hundred sixty-eight billion, eight hundred sixty million, nine hundred fifty-four thousand, five hundred fifty-one".