61886924321 has 16 divisors (see below), whose sum is σ = 65840402880. Its totient is φ = 57968640000.

The previous prime is 61886924293. The next prime is 61886924353. The reversal of 61886924321 is 12342968816.

61886924321 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 61886924321 - 2¹⁸ = 61886662177 is a prime.

It is a super-2 number, since 2×61886924321² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61886924321.

It is not an unprimeable number, because it can be changed into a prime (61886924371) 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, 5494946 + ... + 5506196.

It is an arithmetic number, because the mean of its divisors is an integer number (4115025180).

Almost surely, 2^61886924321 is an apocalyptic number.

It is an amenable number.

61886924321 is a deficient number, since it is larger than the sum of its proper divisors (3953478559).

61886924321 is a wasteful number, since it uses less digits than its factorization.

61886924321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12784.

The product of its digits is 995328, while the sum is 50.

The spelling of 61886924321 in words is "sixty-one billion, eight hundred eighty-six million, nine hundred twenty-four thousand, three hundred twenty-one".