61041263820 has 24 divisors (see below), whose sum is σ = 170915538864. Its totient is φ = 16277670336.

The previous prime is 61041263797. The next prime is 61041263821. The reversal of 61041263820 is 2836214016.

It is not an unprimeable number, because it can be changed into a prime (61041263821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508677139 + ... + 508677258.

It is an arithmetic number, because the mean of its divisors is an integer number (7121480786).

Almost surely, 2^61041263820 is an apocalyptic number.

61041263820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61041263820 is an abundant number, since it is smaller than the sum of its proper divisors (109874275044).

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

61041263820 is a wasteful number, since it uses less digits than its factorization.

61041263820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017354409 (or 1017354407 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

Adding to 61041263820 its reverse (2836214016), we get a palindrome (63877477836).

The spelling of 61041263820 in words is "sixty-one billion, forty-one million, two hundred sixty-three thousand, eight hundred twenty".