61578452330 has 16 divisors (see below), whose sum is σ = 110846223360. Its totient is φ = 24630267792.

The previous prime is 61578452329. The next prime is 61578452407. The reversal of 61578452330 is 3325487516.

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, 115367 + ... + 369413.

It is an arithmetic number, because the mean of its divisors is an integer number (6927888960).

Almost surely, 2^61578452330 is an apocalyptic number.

61578452330 is a deficient number, since it is larger than the sum of its proper divisors (49267771030).

61578452330 is a wasteful number, since it uses less digits than its factorization.

61578452330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278293.

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 61578452330 in words is "sixty-one billion, five hundred seventy-eight million, four hundred fifty-two thousand, three hundred thirty".