61889528502 has 96 divisors (see below), whose sum is σ = 137371414752. Its totient is φ = 20132462592.

The previous prime is 61889528501. The next prime is 61889528521. The reversal of 61889528502 is 20582598816.

It is a happy number.

61889528502 is a `hidden beast` number, since 6 + 1 + 8 + 89 + 52 + 8 + 502 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61889528501) 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 47 ways as a sum of consecutive naturals, for example, 72216058 + ... + 72216914.

It is an arithmetic number, because the mean of its divisors is an integer number (1430952237).

Almost surely, 2^61889528502 is an apocalyptic number.

61889528502 is an abundant number, since it is smaller than the sum of its proper divisors (75481886250).

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

61889528502 is a wasteful number, since it uses less digits than its factorization.

61889528502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422 (or 1419 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 54.

The spelling of 61889528502 in words is "sixty-one billion, eight hundred eighty-nine million, five hundred twenty-eight thousand, five hundred two".