61645413074 has 16 divisors (see below), whose sum is σ = 105826920000. Its totient is φ = 26382195504.

The previous prime is 61645413061. The next prime is 61645413169. The reversal of 61645413074 is 47031454616.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3095324 + ... + 3115175.

It is an arithmetic number, because the mean of its divisors is an integer number (6614182500).

Almost surely, 2^61645413074 is an apocalyptic number.

61645413074 is a deficient number, since it is larger than the sum of its proper divisors (44181506926).

61645413074 is a wasteful number, since it uses less digits than its factorization.

61645413074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6211217.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 61645413074 in words is "sixty-one billion, six hundred forty-five million, four hundred thirteen thousand, seventy-four".