61441480020 has 48 divisors (see below), whose sum is σ = 172057092480. Its totient is φ = 16382399616.

The previous prime is 61441479991. The next prime is 61441480021. The reversal of 61441480020 is 2008414416.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 61441480020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61441480021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472414 + ... + 588266.

It is an arithmetic number, because the mean of its divisors is an integer number (3584522760).

Almost surely, 2^61441480020 is an apocalyptic number.

61441480020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61441480020 is an abundant number, since it is smaller than the sum of its proper divisors (110615612460).

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

61441480020 is a wasteful number, since it uses less digits than its factorization.

61441480020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124704 (or 124702 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

Adding to 61441480020 its reverse (2008414416), we get a palindrome (63449894436).

The spelling of 61441480020 in words is "sixty-one billion, four hundred forty-one million, four hundred eighty thousand, twenty".