61403141244 has 72 divisors (see below), whose sum is σ = 152141041920. Its totient is φ = 19271284128.

The previous prime is 61403141243. The next prime is 61403141249. The reversal of 61403141244 is 44214130416.

It is a super-2 number, since 2×61403141244² (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 (61403141243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 662637 + ... + 749595.

Almost surely, 2^61403141244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61403141244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76070520960).

61403141244 is an abundant number, since it is smaller than the sum of its proper divisors (90737900676).

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

61403141244 is a wasteful number, since it uses less digits than its factorization.

61403141244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87167 (or 87146 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 61403141244 in words is "sixty-one billion, four hundred three million, one hundred forty-one thousand, two hundred forty-four".