61028807476 has 144 divisors (see below), whose sum is σ = 138955993344. Its totient is φ = 22919390208.

The previous prime is 61028807447. The next prime is 61028807513. The reversal of 61028807476 is 67470882016.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 14908486 + ... + 14912578.

It is an arithmetic number, because the mean of its divisors is an integer number (964972176).

Almost surely, 2^61028807476 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 61028807476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69477996672).

61028807476 is an abundant number, since it is smaller than the sum of its proper divisors (77927185868).

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

61028807476 is a wasteful number, since it uses less digits than its factorization.

61028807476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290 (or 4275 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 61028807476 in words is "sixty-one billion, twenty-eight million, eight hundred seven thousand, four hundred seventy-six".