52100026581 has 16 divisors (see below), whose sum is σ = 72520744320. Its totient is φ = 33207736320.

The previous prime is 52100026549. The next prime is 52100026681. The reversal of 52100026581 is 18562000125.

It is not a de Polignac number, because 52100026581 - 2⁵ = 52100026549 is a prime.

It is a super-2 number, since 2×52100026581² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52100026501) 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, 25596 + ... + 323813.

It is an arithmetic number, because the mean of its divisors is an integer number (4532546520).

Almost surely, 2^52100026581 is an apocalyptic number.

It is an amenable number.

52100026581 is a deficient number, since it is larger than the sum of its proper divisors (20420717739).

52100026581 is a wasteful number, since it uses less digits than its factorization.

52100026581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351596.

The product of its (nonzero) digits is 4800, while the sum is 30.

It can be divided in two parts, 521000 and 26581, that added together give a triangular number (547581 = T₁₀₄₆).

The spelling of 52100026581 in words is "fifty-two billion, one hundred million, twenty-six thousand, five hundred eighty-one".