61551763152 has 80 divisors (see below), whose sum is σ = 173548267200. Its totient is φ = 18642995200.

The previous prime is 61551763151. The next prime is 61551763171. The reversal of 61551763152 is 25136715516.

61551763152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61551763151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1103224 + ... + 1157672.

It is an arithmetic number, because the mean of its divisors is an integer number (2169353340).

Almost surely, 2^61551763152 is an apocalyptic number.

It is an amenable number.

61551763152 is an abundant number, since it is smaller than the sum of its proper divisors (111996504048).

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

61551763152 is a wasteful number, since it uses less digits than its factorization.

61551763152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56612 (or 56606 counting only the distinct ones).

The product of its digits is 189000, while the sum is 42.

The spelling of 61551763152 in words is "sixty-one billion, five hundred fifty-one million, seven hundred sixty-three thousand, one hundred fifty-two".