61110051011100 has 1728 divisors, whose sum is σ = 255267053862912. Its totient is φ = 11881230336000.

The previous prime is 61110051011083. The next prime is 61110051011101. The reversal of 61110051011100 is 111015001116.

It is a happy number.

61110051011100 is a `hidden beast` number, since 611 + 1 + 0 + 0 + 51 + 0 + 1 + 1 + 1 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61110051011101) by changing a digit.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 4415140180 + ... + 4415154020.

It is an arithmetic number, because the mean of its divisors is an integer number (147723989504).

Almost surely, 2^{61110051011100} is an apocalyptic number.

61110051011100 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61110051011100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127633526931456).

61110051011100 is an abundant number, since it is smaller than the sum of its proper divisors (194157002851812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61110051011100 is a wasteful number, since it uses less digits than its factorization.

61110051011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13996 (or 13986 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 18.

Adding to 61110051011100 its reverse (111015001116), we get a palindrome (61221066012216).

The spelling of 61110051011100 in words is "sixty-one trillion, one hundred ten billion, fifty-one million, eleven thousand, one hundred".