61017018445 has 16 divisors (see below), whose sum is σ = 74816213760. Its totient is φ = 47750807104.

The previous prime is 61017018431. The next prime is 61017018449. The reversal of 61017018445 is 54481071016.

61017018445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 61017018445 - 2¹⁹ = 61016494157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61017018449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405891 + ... + 535519.

It is an arithmetic number, because the mean of its divisors is an integer number (4676013360).

Almost surely, 2^61017018445 is an apocalyptic number.

It is an amenable number.

61017018445 is a deficient number, since it is larger than the sum of its proper divisors (13799195315).

61017018445 is a wasteful number, since it uses less digits than its factorization.

61017018445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131684.

The product of its (nonzero) digits is 26880, while the sum is 37.

The spelling of 61017018445 in words is "sixty-one billion, seventeen million, eighteen thousand, four hundred forty-five".