61541413444 has 48 divisors (see below), whose sum is σ = 131566853376. Its totient is φ = 24612825600.

The previous prime is 61541413433. The next prime is 61541413447. The reversal of 61541413444 is 44431414516.

It is a super-2 number, since 2×61541413444² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61541413447) 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, 1138977 + ... + 1191784.

It is an arithmetic number, because the mean of its divisors is an integer number (2740976112).

Almost surely, 2^61541413444 is an apocalyptic number.

It is an amenable number.

61541413444 is an abundant number, since it is smaller than the sum of its proper divisors (70025439932).

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

61541413444 is a wasteful number, since it uses less digits than its factorization.

61541413444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330836 (or 2330834 counting only the distinct ones).

The product of its digits is 92160, while the sum is 37.

The spelling of 61541413444 in words is "sixty-one billion, five hundred forty-one million, four hundred thirteen thousand, four hundred forty-four".