61298309522 has 6 divisors (see below), whose sum is σ = 91947989493. Its totient is φ = 30648979692.

The previous prime is 61298309507. The next prime is 61298309543. The reversal of 61298309522 is 22590389216.

It can be written as a sum of positive squares in 2 ways, for example, as 60516492001 + 781817521 = 246001^2 + 27961^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=175069.

It is a Duffinian number.

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 2 ways as a sum of consecutive naturals, for example, 262604 + ... + 437672.

Almost surely, 2^61298309522 is an apocalyptic number.

61298309522 is a deficient number, since it is larger than the sum of its proper divisors (30649679971).

61298309522 is an frugal number, since it uses more digits than its factorization.

61298309522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350140 (or 175071 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 61298309522 in words is "sixty-one billion, two hundred ninety-eight million, three hundred nine thousand, five hundred twenty-two".