13261740511 has 8 divisors (see below), whose sum is σ = 14494806144. Its totient is φ = 12079004160.

The previous prime is 13261740493. The next prime is 13261740539. The reversal of 13261740511 is 11504716231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13261740511 - 2²⁵ = 13228186079 is a prime.

It is a super-2 number, since 2×13261740511² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13261740311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12581770 + ... + 12582823.

It is an arithmetic number, because the mean of its divisors is an integer number (1811850768).

Almost surely, 2^13261740511 is an apocalyptic number.

13261740511 is a deficient number, since it is larger than the sum of its proper divisors (1233065633).

13261740511 is a wasteful number, since it uses less digits than its factorization.

13261740511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25164641.

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 13261740511 in words is "thirteen billion, two hundred sixty-one million, seven hundred forty thousand, five hundred eleven".