26972250261 has 32 divisors (see below), whose sum is σ = 41310259200. Its totient is φ = 15481572480.

The previous prime is 26972250211. The next prime is 26972250281. The reversal of 26972250261 is 16205227962.

It is not a de Polignac number, because 26972250261 - 2¹⁹ = 26971725973 is a prime.

It is a super-3 number, since 3×26972250261³ (a number of 32 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26972250211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3155185 + ... + 3163721.

It is an arithmetic number, because the mean of its divisors is an integer number (1290945600).

Almost surely, 2^26972250261 is an apocalyptic number.

It is an amenable number.

26972250261 is a deficient number, since it is larger than the sum of its proper divisors (14338008939).

26972250261 is a wasteful number, since it uses less digits than its factorization.

26972250261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13609.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 26972250261 in words is "twenty-six billion, nine hundred seventy-two million, two hundred fifty thousand, two hundred sixty-one".