61500016 has 20 divisors (see below), whose sum is σ = 126166032. Its totient is φ = 28941056.

The previous prime is 61499993. The next prime is 61500059. The reversal of 61500016 is 61000516.

61500016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61499966 and 61500002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112780 + ... + 113323.

Almost surely, 2^61500016 is an apocalyptic number.

It is an amenable number.

61500016 is an abundant number, since it is smaller than the sum of its proper divisors (64666016).

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

61500016 is a wasteful number, since it uses less digits than its factorization.

61500016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226128 (or 226122 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 61500016 is about 7842.1945908017. The cubic root of 61500016 is about 394.7223728791.

Subtracting from 61500016 its reverse (61000516), we obtain a triangular number (499500 = T₉₉₉).

The spelling of 61500016 in words is "sixty-one million, five hundred thousand, sixteen".