261362005145475 has 24 divisors (see below), whose sum is σ = 465358400958192. Its totient is φ = 128670525609600.

The previous prime is 261362005145471. The next prime is 261362005145491. The reversal of 261362005145475 is 574541500263162.

It is not a de Polignac number, because 261362005145475 - 2² = 261362005145471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261362005145471) 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, 134031796536 + ... + 134031798485.

It is an arithmetic number, because the mean of its divisors is an integer number (19389933373258).

Almost surely, 2^{261362005145475} is an apocalyptic number.

261362005145475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

261362005145475 is a deficient number, since it is larger than the sum of its proper divisors (203996395812717).

261362005145475 is a wasteful number, since it uses less digits than its factorization.

261362005145475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268063595047 (or 268063595042 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 51.

The spelling of 261362005145475 in words is "two hundred sixty-one trillion, three hundred sixty-two billion, five million, one hundred forty-five thousand, four hundred seventy-five".