61064480421 has 32 divisors (see below), whose sum is σ = 103401478400. Its totient is φ = 34889978880.

The previous prime is 61064480401. The next prime is 61064480423. The reversal of 61064480421 is 12408446016.

It is a happy number.

61064480421 is a `hidden beast` number, since 6 + 1 + 0 + 644 + 8 + 0 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 61064480421 - 2¹⁹ = 61063956133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61064480423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2619465 + ... + 2642673.

It is an arithmetic number, because the mean of its divisors is an integer number (3231296200).

Almost surely, 2^61064480421 is an apocalyptic number.

It is an amenable number.

61064480421 is a deficient number, since it is larger than the sum of its proper divisors (42336997979).

61064480421 is a wasteful number, since it uses less digits than its factorization.

61064480421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37146 (or 37140 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 61064480421 in words is "sixty-one billion, sixty-four million, four hundred eighty thousand, four hundred twenty-one".