61505005494 has 8 divisors (see below), whose sum is σ = 123010011000. Its totient is φ = 20501668496.

The previous prime is 61505005477. The next prime is 61505005531. The reversal of 61505005494 is 49450050516.

It is a sphenic number, since it is the product of 3 distinct primes.

61505005494 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5125417119 + ... + 5125417130.

It is an arithmetic number, because the mean of its divisors is an integer number (15376251375).

Almost surely, 2^61505005494 is an apocalyptic number.

61505005494 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61505005494 is a wasteful number, since it uses less digits than its factorization.

61505005494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10250834254.

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 61505005494 in words is "sixty-one billion, five hundred five million, five thousand, four hundred ninety-four".