61081108835553 has 24 divisors (see below), whose sum is σ = 89473454680896. Its totient is φ = 40146070322400.

The previous prime is 61081108835531. The next prime is 61081108835597. The reversal of 61081108835553 is 35553880118016.

61081108835553 is a `hidden beast` number, since 6 + 1 + 0 + 8 + 1 + 1 + 0 + 8 + 83 + 5 + 553 = 666.

It is not a de Polignac number, because 61081108835553 - 2⁵ = 61081108835521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61081108835553.

It is not an unprimeable number, because it can be changed into a prime (61081108835053) 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, 21521551 + ... + 24193787.

It is an arithmetic number, because the mean of its divisors is an integer number (3728060611704).

Almost surely, 2^{61081108835553} is an apocalyptic number.

It is an amenable number.

61081108835553 is a deficient number, since it is larger than the sum of its proper divisors (28392345845343).

61081108835553 is a wasteful number, since it uses less digits than its factorization.

61081108835553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2708085 (or 2708082 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 54.

The spelling of 61081108835553 in words is "sixty-one trillion, eighty-one billion, one hundred eight million, eight hundred thirty-five thousand, five hundred fifty-three".