61017715045 has 16 divisors (see below), whose sum is σ = 83802572928. Its totient is φ = 41780151360.

The previous prime is 61017715037. The next prime is 61017715051. The reversal of 61017715045 is 54051771016.

It is a happy number.

61017715045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61017715045 - 2³ = 61017715037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61017714995 and 61017715013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1237294 + ... + 1285663.

It is an arithmetic number, because the mean of its divisors is an integer number (5237660808).

Almost surely, 2^61017715045 is an apocalyptic number.

It is an amenable number.

61017715045 is a deficient number, since it is larger than the sum of its proper divisors (22784857883).

61017715045 is a wasteful number, since it uses less digits than its factorization.

61017715045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523660.

The product of its (nonzero) digits is 29400, while the sum is 37.

The spelling of 61017715045 in words is "sixty-one billion, seventeen million, seven hundred fifteen thousand, forty-five".