268356774951 has 16 divisors (see below), whose sum is σ = 397582437600. Its totient is φ = 178896936384.

The previous prime is 268356774947. The next prime is 268356774979. The reversal of 268356774951 is 159477653862.

268356774951 is a `hidden beast` number, since 2 + 6 + 83 + 5 + 67 + 7 + 495 + 1 = 666.

It is not a de Polignac number, because 268356774951 - 2² = 268356774947 is a prime.

It is a super-2 number, since 2×268356774951² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268356774911) 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, 479605 + ... + 875633.

It is an arithmetic number, because the mean of its divisors is an integer number (24848902350).

Almost surely, 2^268356774951 is an apocalyptic number.

268356774951 is a deficient number, since it is larger than the sum of its proper divisors (129225662649).

268356774951 is a wasteful number, since it uses less digits than its factorization.

268356774951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421135 (or 421129 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 63.

The spelling of 268356774951 in words is "two hundred sixty-eight billion, three hundred fifty-six million, seven hundred seventy-four thousand, nine hundred fifty-one".