61851546432 has 112 divisors (see below), whose sum is σ = 195819247680. Its totient is φ = 19031238144.

The previous prime is 61851546293. The next prime is 61851546439. The reversal of 61851546432 is 23464515816.

61851546432 is a `hidden beast` number, since 6 + 18 + 51 + 546 + 43 + 2 = 666.

It is a super-2 number, since 2×61851546432² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61851546439) by changing a digit.

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, 1354218 + ... + 1399145.

It is an arithmetic number, because the mean of its divisors is an integer number (1748386140).

Almost surely, 2^61851546432 is an apocalyptic number.

It is an amenable number.

61851546432 is an abundant number, since it is smaller than the sum of its proper divisors (133967701248).

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

61851546432 is a wasteful number, since it uses less digits than its factorization.

61851546432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753397 (or 2753381 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The spelling of 61851546432 in words is "sixty-one billion, eight hundred fifty-one million, five hundred forty-six thousand, four hundred thirty-two".