61512254424 has 24 divisors (see below), whose sum is σ = 166595689260. Its totient is φ = 20504084784.

The previous prime is 61512254411. The next prime is 61512254429. The reversal of 61512254424 is 42445221516.

61512254424 is a `hidden beast` number, since 6 + 1 + 5 + 1 + 225 + 4 + 424 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61512254429) 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 5 ways as a sum of consecutive naturals, for example, 427168362 + ... + 427168505.

Almost surely, 2^61512254424 is an apocalyptic number.

It is an amenable number.

61512254424 is an abundant number, since it is smaller than the sum of its proper divisors (105083434836).

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

61512254424 is a wasteful number, since it uses less digits than its factorization.

61512254424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854336879 (or 854336872 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The spelling of 61512254424 in words is "sixty-one billion, five hundred twelve million, two hundred fifty-four thousand, four hundred twenty-four".