61408715352 has 32 divisors (see below), whose sum is σ = 153695705280. Its totient is φ = 20446382880.

The previous prime is 61408715351. The next prime is 61408715441. The reversal of 61408715352 is 25351780416.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61408715351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1427674 + ... + 1470057.

It is an arithmetic number, because the mean of its divisors is an integer number (4802990790).

Almost surely, 2^61408715352 is an apocalyptic number.

It is an amenable number.

61408715352 is an abundant number, since it is smaller than the sum of its proper divisors (92286989928).

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

61408715352 is a wasteful number, since it uses less digits than its factorization.

61408715352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2898623 (or 2898619 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 61408715352 in words is "sixty-one billion, four hundred eight million, seven hundred fifteen thousand, three hundred fifty-two".