61312245464 has 32 divisors (see below), whose sum is σ = 115614048000. Its totient is φ = 30482036640.

The previous prime is 61312245437. The next prime is 61312245479. The reversal of 61312245464 is 46454221316.

It is a congruent number.

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, 2578349 + ... + 2602019.

It is an arithmetic number, because the mean of its divisors is an integer number (3612939000).

Almost surely, 2^61312245464 is an apocalyptic number.

It is an amenable number.

61312245464 is a deficient number, since it is larger than the sum of its proper divisors (54301802536).

61312245464 is a wasteful number, since it uses less digits than its factorization.

61312245464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25503 (or 25499 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

The spelling of 61312245464 in words is "sixty-one billion, three hundred twelve million, two hundred forty-five thousand, four hundred sixty-four".