61110326421 has 16 divisors (see below), whose sum is σ = 90730221120. Its totient is φ = 40651835760.

The previous prime is 61110326363. The next prime is 61110326483. The reversal of 61110326421 is 12462301116.

It is a happy number.

61110326421 is a `hidden beast` number, since 6 + 1 + 1 + 10 + 3 + 2 + 642 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-61110326421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61110326521) 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 15 ways as a sum of consecutive naturals, for example, 2442375 + ... + 2467268.

It is an arithmetic number, because the mean of its divisors is an integer number (5670638820).

Almost surely, 2^61110326421 is an apocalyptic number.

It is an amenable number.

61110326421 is a deficient number, since it is larger than the sum of its proper divisors (29619894699).

61110326421 is a wasteful number, since it uses less digits than its factorization.

61110326421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4910113 (or 4910107 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 61110326421 its reverse (12462301116), we get a palindrome (73572627537).

The spelling of 61110326421 in words is "sixty-one billion, one hundred ten million, three hundred twenty-six thousand, four hundred twenty-one".