61214455420 has 48 divisors (see below), whose sum is σ = 130291848288. Its totient is φ = 24155688960.

The previous prime is 61214455411. The next prime is 61214455427. The reversal of 61214455420 is 2455441216.

61214455420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61214455427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 556815 + ... + 657625.

It is an arithmetic number, because the mean of its divisors is an integer number (2714413506).

Almost surely, 2^61214455420 is an apocalyptic number.

It is an amenable number.

61214455420 is an abundant number, since it is smaller than the sum of its proper divisors (69077392868).

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

61214455420 is a wasteful number, since it uses less digits than its factorization.

61214455420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101230 (or 101228 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 61214455420 its reverse (2455441216), we get a palindrome (63669896636).

The spelling of 61214455420 in words is "sixty-one billion, two hundred fourteen million, four hundred fifty-five thousand, four hundred twenty".