26572870292545 has 4 divisors (see below), whose sum is σ = 31887444351060. Its totient is φ = 21258296234032.

The previous prime is 26572870292473. The next prime is 26572870292629. The reversal of 26572870292545 is 54529207827562.

It is a happy number.

It is a Cunningham number, because it is equal to 5154888²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9566228356624 + 17006641935921 = 3092932^2 + 4123911^2 .

It is a cyclic number.

It is not a de Polignac number, because 26572870292545 - 2¹⁹ = 26572869768257 is a prime.

It is a super-2 number, since 2×26572870292545² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2657287029250 + ... + 2657287029259.

It is an arithmetic number, because the mean of its divisors is an integer number (7971861087765).

Almost surely, 2^{26572870292545} is an apocalyptic number.

It is an amenable number.

26572870292545 is a deficient number, since it is larger than the sum of its proper divisors (5314574058515).

26572870292545 is an equidigital number, since it uses as much as digits as its factorization.

26572870292545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5314574058514.

The product of its (nonzero) digits is 169344000, while the sum is 64.

The spelling of 26572870292545 in words is "twenty-six trillion, five hundred seventy-two billion, eight hundred seventy million, two hundred ninety-two thousand, five hundred forty-five".