61501452633 has 20 divisors (see below), whose sum is σ = 91987909860. Its totient is φ = 40949481312.

The previous prime is 61501452629. The next prime is 61501452703. The reversal of 61501452633 is 33625410516.

61501452633 is a `hidden beast` number, since 6 + 1 + 5 + 0 + 14 + 5 + 2 + 633 = 666.

61501452633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 43586165529 + 17915287104 = 208773^2 + 133848^2 .

It is not a de Polignac number, because 61501452633 - 2² = 61501452629 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61501452533) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 411778 + ... + 540891.

It is an arithmetic number, because the mean of its divisors is an integer number (4599395493).

Almost surely, 2^61501452633 is an apocalyptic number.

It is an amenable number.

61501452633 is a deficient number, since it is larger than the sum of its proper divisors (30486457227).

61501452633 is an equidigital number, since it uses as much as digits as its factorization.

61501452633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953478 (or 953469 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 61501452633 in words is "sixty-one billion, five hundred one million, four hundred fifty-two thousand, six hundred thirty-three".