61628719380 has 48 divisors (see below), whose sum is σ = 174173146560. Its totient is φ = 16280731648.

The previous prime is 61628719367. The next prime is 61628719387. The reversal of 61628719380 is 8391782616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61628719387) 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, 4793325 + ... + 4806164.

It is an arithmetic number, because the mean of its divisors is an integer number (3628607220).

Almost surely, 2^61628719380 is an apocalyptic number.

61628719380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61628719380 is an abundant number, since it is smaller than the sum of its proper divisors (112544427180).

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

61628719380 is a wasteful number, since it uses less digits than its factorization.

61628719380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9599608 (or 9599606 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 61628719380 in words is "sixty-one billion, six hundred twenty-eight million, seven hundred nineteen thousand, three hundred eighty".