61386381085432 has 32 divisors (see below), whose sum is σ = 123982566835680. Its totient is φ = 28325479351680.

The previous prime is 61386381085361. The next prime is 61386381085457. The reversal of 61386381085432 is 23458018368316.

It is a happy number.

61386381085432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61386381085432² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69313423 + ... + 70193470.

It is an arithmetic number, because the mean of its divisors is an integer number (3874455213615).

Almost surely, 2^{61386381085432} is an apocalyptic number.

It is an amenable number.

61386381085432 is an abundant number, since it is smaller than the sum of its proper divisors (62596185750248).

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

61386381085432 is a wasteful number, since it uses less digits than its factorization.

61386381085432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139511143 (or 139511139 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 58.

The spelling of 61386381085432 in words is "sixty-one trillion, three hundred eighty-six billion, three hundred eighty-one million, eighty-five thousand, four hundred thirty-two".