61005551432 has 32 divisors (see below), whose sum is σ = 133507595520. Its totient is φ = 25588953600.

The previous prime is 61005551407. The next prime is 61005551441. The reversal of 61005551432 is 23415550016.

61005551432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11586569 + ... + 11591832.

It is an arithmetic number, because the mean of its divisors is an integer number (4172112360).

Almost surely, 2^61005551432 is an apocalyptic number.

It is an amenable number.

61005551432 is an abundant number, since it is smaller than the sum of its proper divisors (72502044088).

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

61005551432 is a wasteful number, since it uses less digits than its factorization.

61005551432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23178461 (or 23178457 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 61005551432 in words is "sixty-one billion, five million, five hundred fifty-one thousand, four hundred thirty-two".