61474389822145 has 16 divisors (see below), whose sum is σ = 74159640050688. Its totient is φ = 48919292472960.

The previous prime is 61474389822143. The next prime is 61474389822149. The reversal of 61474389822145 is 54122898347416.

It is a happy number.

It is not a de Polignac number, because 61474389822145 - 2¹ = 61474389822143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61474389822143) 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, 15377662 + ... + 18958408.

It is an arithmetic number, because the mean of its divisors is an integer number (4634977503168).

Almost surely, 2^{61474389822145} is an apocalyptic number.

It is an amenable number.

61474389822145 is a deficient number, since it is larger than the sum of its proper divisors (12685250228543).

61474389822145 is a wasteful number, since it uses less digits than its factorization.

61474389822145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3598920.

The product of its digits is 92897280, while the sum is 64.

The spelling of 61474389822145 in words is "sixty-one trillion, four hundred seventy-four billion, three hundred eighty-nine million, eight hundred twenty-two thousand, one hundred forty-five".