61420553432 has 64 divisors (see below), whose sum is σ = 132604800000. Its totient is φ = 26125545600.

The previous prime is 61420553419. The next prime is 61420553443. The reversal of 61420553432 is 23435502416.

61420553432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61420553392 and 61420553401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12284069 + ... + 12289067.

It is an arithmetic number, because the mean of its divisors is an integer number (2071950000).

Almost surely, 2^61420553432 is an apocalyptic number.

It is an amenable number.

61420553432 is an abundant number, since it is smaller than the sum of its proper divisors (71184246568).

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

61420553432 is a wasteful number, since it uses less digits than its factorization.

61420553432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6616 (or 6612 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

The spelling of 61420553432 in words is "sixty-one billion, four hundred twenty million, five hundred fifty-three thousand, four hundred thirty-two".