61644246514 has 32 divisors (see below), whose sum is σ = 93805620480. Its totient is φ = 30379190400.

The previous prime is 61644246473. The next prime is 61644246557. The reversal of 61644246514 is 41564244616.

It is a happy number.

61644246514 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41622654 + ... + 41624134.

It is an arithmetic number, because the mean of its divisors is an integer number (2931425640).

Almost surely, 2^61644246514 is an apocalyptic number.

61644246514 is a deficient number, since it is larger than the sum of its proper divisors (32161373966).

61644246514 is a wasteful number, since it uses less digits than its factorization.

61644246514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466.

The product of its digits is 552960, while the sum is 43.

The spelling of 61644246514 in words is "sixty-one billion, six hundred forty-four million, two hundred forty-six thousand, five hundred fourteen".