61633394760 has 64 divisors (see below), whose sum is σ = 211314499200. Its totient is φ = 14087632896.

The previous prime is 61633394749. The next prime is 61633394761. The reversal of 61633394760 is 6749333616.

It is not an unprimeable number, because it can be changed into a prime (61633394761) 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, 36685705 + ... + 36687384.

It is an arithmetic number, because the mean of its divisors is an integer number (3301789050).

Almost surely, 2^61633394760 is an apocalyptic number.

61633394760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61633394760 is an abundant number, since it is smaller than the sum of its proper divisors (149681104440).

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

61633394760 is a wasteful number, since it uses less digits than its factorization.

61633394760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73373110 (or 73373106 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 48.

The spelling of 61633394760 in words is "sixty-one billion, six hundred thirty-three million, three hundred ninety-four thousand, seven hundred sixty".