261653240414055 has 64 divisors (see below), whose sum is σ = 480858977894400. Its totient is φ = 119012581860480.

The previous prime is 261653240414039. The next prime is 261653240414183. The reversal of 261653240414055 is 550414042356162.

It is not a de Polignac number, because 261653240414055 - 2⁴ = 261653240414039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 261653240413995 and 261653240414013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8828010 + ... + 24520200.

It is an arithmetic number, because the mean of its divisors is an integer number (7513421529600).

Almost surely, 2^{261653240414055} is an apocalyptic number.

261653240414055 is a deficient number, since it is larger than the sum of its proper divisors (219205737480345).

261653240414055 is a wasteful number, since it uses less digits than its factorization.

261653240414055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15693004.

The product of its (nonzero) digits is 3456000, while the sum is 48.

The spelling of 261653240414055 in words is "two hundred sixty-one trillion, six hundred fifty-three billion, two hundred forty million, four hundred fourteen thousand, fifty-five".