61650899372 has 12 divisors (see below), whose sum is σ = 107978915016. Its totient is φ = 30799780800.

The previous prime is 61650899369. The next prime is 61650899377. The reversal of 61650899372 is 27399805616.

It is a happy number.

61650899372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61650899377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6411818 + ... + 6421425.

It is an arithmetic number, because the mean of its divisors is an integer number (8998242918).

Almost surely, 2^61650899372 is an apocalyptic number.

It is an amenable number.

61650899372 is a deficient number, since it is larger than the sum of its proper divisors (46328015644).

61650899372 is a wasteful number, since it uses less digits than its factorization.

61650899372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12834448 (or 12834446 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 56.

The spelling of 61650899372 in words is "sixty-one billion, six hundred fifty million, eight hundred ninety-nine thousand, three hundred seventy-two".