61001105044 has 144 divisors (see below), whose sum is σ = 127360800000. Its totient is φ = 25461596160.

The previous prime is 61001105029. The next prime is 61001105047. The reversal of 61001105044 is 44050110016.

It is a super-2 number, since 2×61001105044² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61001105047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48839332 + ... + 48840580.

It is an arithmetic number, because the mean of its divisors is an integer number (884450000).

Almost surely, 2^61001105044 is an apocalyptic number.

It is an amenable number.

61001105044 is an abundant number, since it is smaller than the sum of its proper divisors (66359694956).

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

61001105044 is a wasteful number, since it uses less digits than its factorization.

61001105044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454 (or 1441 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The spelling of 61001105044 in words is "sixty-one billion, one million, one hundred five thousand, forty-four".