26862054457 has 6 divisors (see below), whose sum is σ = 31247696058. Its totient is φ = 23024618064.

The previous prime is 26862054451. The next prime is 26862054469. The reversal of 26862054457 is 75445026862.

It can be written as a sum of positive squares in only one way, i.e., 25543710976 + 1318343481 = 159824^2 + 36309^2 .

It is a de Polignac number, because none of the positive numbers 2^k-26862054457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 548205193 = 26862054457 / (2 + 6 + 8 + 6 + 2 + 0 + 5 + 4 + 4 + 5 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26862054457.

It is not an unprimeable number, because it can be changed into a prime (26862054451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 274102548 + ... + 274102645.

It is an arithmetic number, because the mean of its divisors is an integer number (5207949343).

Almost surely, 2^26862054457 is an apocalyptic number.

It is an amenable number.

26862054457 is a deficient number, since it is larger than the sum of its proper divisors (4385641601).

26862054457 is an equidigital number, since it uses as much as digits as its factorization.

26862054457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548205207 (or 548205200 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 49.

The spelling of 26862054457 in words is "twenty-six billion, eight hundred sixty-two million, fifty-four thousand, four hundred fifty-seven".