26515561053 has 32 divisors (see below), whose sum is σ = 36222100992. Its totient is φ = 17249585600.

The previous prime is 26515561043. The next prime is 26515561091. The reversal of 26515561053 is 35016551562.

It is a cyclic number.

It is not a de Polignac number, because 26515561053 - 2¹⁴ = 26515544669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26515561043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7402723 + ... + 7406303.

It is an arithmetic number, because the mean of its divisors is an integer number (1131940656).

Almost surely, 2^26515561053 is an apocalyptic number.

It is an amenable number.

26515561053 is a deficient number, since it is larger than the sum of its proper divisors (9706539939).

26515561053 is a wasteful number, since it uses less digits than its factorization.

26515561053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4025.

The product of its (nonzero) digits is 135000, while the sum is 39.

The spelling of 26515561053 in words is "twenty-six billion, five hundred fifteen million, five hundred sixty-one thousand, fifty-three".