61263300722 has 18 divisors (see below), whose sum is σ = 99514942317. Its totient is φ = 28273269336.

The previous prime is 61263300713. The next prime is 61263300793. The reversal of 61263300722 is 22700336216.

It can be written as a sum of positive squares in 2 ways, for example, as 52381934641 + 8881366081 = 228871^2 + 94241^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=175019.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4543763 + ... + 4557225.

Almost surely, 2^61263300722 is an apocalyptic number.

61263300722 is a deficient number, since it is larger than the sum of its proper divisors (38251641595).

61263300722 is an frugal number, since it uses more digits than its factorization.

61263300722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26954 (or 13478 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

Multiplying 61263300722 by its sum of digits (32), we get a square (1960425623104 = 1400152²).

Adding to 61263300722 its reverse (22700336216), we get a palindrome (83963636938).

The spelling of 61263300722 in words is "sixty-one billion, two hundred sixty-three million, three hundred thousand, seven hundred twenty-two".