61248804820 has 48 divisors (see below), whose sum is σ = 150124746240. Its totient is φ = 20552788224.

The previous prime is 61248804809. The next prime is 61248804823. The reversal of 61248804820 is 2840884216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61248804823) 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 15 ways as a sum of consecutive naturals, for example, 4647585 + ... + 4660744.

It is an arithmetic number, because the mean of its divisors is an integer number (3127598880).

Almost surely, 2^61248804820 is an apocalyptic number.

It is an amenable number.

61248804820 is an abundant number, since it is smaller than the sum of its proper divisors (88875941420).

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

61248804820 is a wasteful number, since it uses less digits than its factorization.

61248804820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9308392 (or 9308390 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 43.

The spelling of 61248804820 in words is "sixty-one billion, two hundred forty-eight million, eight hundred four thousand, eight hundred twenty".