61531433352 has 64 divisors (see below), whose sum is σ = 171351417600. Its totient is φ = 20458785600.

The previous prime is 61531433323. The next prime is 61531433363. The reversal of 61531433352 is 25333413516.

61531433352 is a `hidden beast` number, since 6 + 1 + 5 + 314 + 3 + 335 + 2 = 666.

It is a super-2 number, since 2×61531433352² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273024 + ... + 444527.

It is an arithmetic number, because the mean of its divisors is an integer number (2677365900).

Almost surely, 2^61531433352 is an apocalyptic number.

It is an amenable number.

61531433352 is an abundant number, since it is smaller than the sum of its proper divisors (109819984248).

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

61531433352 is a wasteful number, since it uses less digits than its factorization.

61531433352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717963 (or 717953 counting only the distinct ones).

The product of its digits is 97200, while the sum is 36.

Adding to 61531433352 its reverse (25333413516), we get a palindrome (86864846868).

The spelling of 61531433352 in words is "sixty-one billion, five hundred thirty-one million, four hundred thirty-three thousand, three hundred fifty-two".