261119231475 has 24 divisors (see below), whose sum is σ = 431848401600. Its totient is φ = 139221244320.

The previous prime is 261119231473. The next prime is 261119231489. The reversal of 261119231475 is 574132911162.

It is not a de Polignac number, because 261119231475 - 2¹ = 261119231473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261119231473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 280249 + ... + 775098.

It is an arithmetic number, because the mean of its divisors is an integer number (17993683400).

Almost surely, 2^261119231475 is an apocalyptic number.

261119231475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

261119231475 is a deficient number, since it is larger than the sum of its proper divisors (170729170125).

261119231475 is a wasteful number, since it uses less digits than its factorization.

261119231475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058659 (or 1058654 counting only the distinct ones).

The product of its digits is 90720, while the sum is 42.

The spelling of 261119231475 in words is "two hundred sixty-one billion, one hundred nineteen million, two hundred thirty-one thousand, four hundred seventy-five".