61465315445221 has 8 divisors (see below), whose sum is σ = 61566253084224. Its totient is φ = 61364458851840.

The previous prime is 61465315445179. The next prime is 61465315445227. The reversal of 61465315445221 is 12254451356416.

61465315445221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61465315445221 - 2¹¹ = 61465315443173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61465315445227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18743260 + ... + 21777061.

It is an arithmetic number, because the mean of its divisors is an integer number (7695781635528).

Almost surely, 2^{61465315445221} is an apocalyptic number.

It is an amenable number.

61465315445221 is a deficient number, since it is larger than the sum of its proper divisors (100937639003).

61465315445221 is a wasteful number, since it uses less digits than its factorization.

61465315445221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40522811.

The product of its digits is 3456000, while the sum is 49.

The spelling of 61465315445221 in words is "sixty-one trillion, four hundred sixty-five billion, three hundred fifteen million, four hundred forty-five thousand, two hundred twenty-one".