61454453420 has 24 divisors (see below), whose sum is σ = 129072264048. Its totient is φ = 24578369600.

The previous prime is 61454453419. The next prime is 61454453429. The reversal of 61454453420 is 2435445416.

It is not an unprimeable number, because it can be changed into a prime (61454453429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62951 + ... + 356190.

It is an arithmetic number, because the mean of its divisors is an integer number (5378011002).

Almost surely, 2^61454453420 is an apocalyptic number.

It is an amenable number.

61454453420 is an abundant number, since it is smaller than the sum of its proper divisors (67617810628).

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

61454453420 is a wasteful number, since it uses less digits than its factorization.

61454453420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426481 (or 426479 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 38.

Adding to 61454453420 its reverse (2435445416), we get a palindrome (63889898836).

The spelling of 61454453420 in words is "sixty-one billion, four hundred fifty-four million, four hundred fifty-three thousand, four hundred twenty".