261552403011454 has 8 divisors (see below), whose sum is σ = 415406757724128. Its totient is φ = 123083483770080.

The previous prime is 261552403011413. The next prime is 261552403011461. The reversal of 261552403011454 is 454110304255162.

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

It is a self number, because there is not a number n which added to its sum of digits gives 261552403011454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3846358867782 + ... + 3846358867849.

It is an arithmetic number, because the mean of its divisors is an integer number (51925844715516).

Almost surely, 2^{261552403011454} is an apocalyptic number.

261552403011454 is a deficient number, since it is larger than the sum of its proper divisors (153854354712674).

261552403011454 is a wasteful number, since it uses less digits than its factorization.

261552403011454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7692717735650.

The product of its (nonzero) digits is 576000, while the sum is 43.

The spelling of 261552403011454 in words is "two hundred sixty-one trillion, five hundred fifty-two billion, four hundred three million, eleven thousand, four hundred fifty-four".