61651293703 has 2 divisors, whose sum is σ = 61651293704. Its totient is φ = 61651293702.

The previous prime is 61651293661. The next prime is 61651293709. The reversal of 61651293703 is 30739215616.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61651293703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61651293703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61651293709) by changing a digit.

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 as a sum of consecutive naturals, namely, 30825646851 + 30825646852.

It is an arithmetic number, because the mean of its divisors is an integer number (30825646852).

Almost surely, 2^61651293703 is an apocalyptic number.

61651293703 is a deficient number, since it is larger than the sum of its proper divisors (1).

61651293703 is an equidigital number, since it uses as much as digits as its factorization.

61651293703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 43.

The spelling of 61651293703 in words is "sixty-one billion, six hundred fifty-one million, two hundred ninety-three thousand, seven hundred three".