61001105118 has 32 divisors (see below), whose sum is σ = 122340641280. Its totient is φ = 20277371520.

The previous prime is 61001105047. The next prime is 61001105119. The reversal of 61001105118 is 81150110016.

It is a happy number.

It is a super-2 number, since 2×61001105118² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61001105119) 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, 3551046 + ... + 3568182.

It is an arithmetic number, because the mean of its divisors is an integer number (3823145040).

Almost surely, 2^61001105118 is an apocalyptic number.

61001105118 is an abundant number, since it is smaller than the sum of its proper divisors (61339536162).

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

61001105118 is a wasteful number, since it uses less digits than its factorization.

61001105118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18752.

The product of its (nonzero) digits is 240, while the sum is 24.

The spelling of 61001105118 in words is "sixty-one billion, one million, one hundred five thousand, one hundred eighteen".