1237303720961 has 16 divisors (see below), whose sum is σ = 1542772085760. Its totient is φ = 964032985680.

The previous prime is 1237303720937. The next prime is 1237303720981. The reversal of 1237303720961 is 1690273037321.

It is a cyclic number.

It is not a de Polignac number, because 1237303720961 - 2¹⁴ = 1237303704577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1237303720931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78311 + ... + 1575036.

It is an arithmetic number, because the mean of its divisors is an integer number (96423255360).

Almost surely, 2^{1237303720961} is an apocalyptic number.

1237303720961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1237303720961 is a deficient number, since it is larger than the sum of its proper divisors (305468364799).

1237303720961 is a wasteful number, since it uses less digits than its factorization.

1237303720961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663084.

The product of its (nonzero) digits is 285768, while the sum is 44.

The spelling of 1237303720961 in words is "one trillion, two hundred thirty-seven billion, three hundred three million, seven hundred twenty thousand, nine hundred sixty-one".