261524137413 has 32 divisors (see below), whose sum is σ = 460314455040. Its totient is φ = 127865122560.

The previous prime is 261524137351. The next prime is 261524137439. The reversal of 261524137413 is 314731425162.

261524137413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 261524137413 - 2⁶ = 261524137349 is a prime.

It is a super-2 number, since 2×261524137413² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261524137493) 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, 33294283 + ... + 33302136.

It is an arithmetic number, because the mean of its divisors is an integer number (14384826720).

Almost surely, 2^261524137413 is an apocalyptic number.

It is an amenable number.

261524137413 is a deficient number, since it is larger than the sum of its proper divisors (198790317627).

261524137413 is a wasteful number, since it uses less digits than its factorization.

261524137413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66596457.

The product of its digits is 120960, while the sum is 39.

The spelling of 261524137413 in words is "two hundred sixty-one billion, five hundred twenty-four million, one hundred thirty-seven thousand, four hundred thirteen".