1237490605651 has 2 divisors, whose sum is σ = 1237490605652. Its totient is φ = 1237490605650.

The previous prime is 1237490605649. The next prime is 1237490605661. The reversal of 1237490605651 is 1565060947321.

It is a weak prime.

It is an emirp because it is prime and its reverse (1565060947321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1237490605651 - 2¹ = 1237490605649 is a prime.

Together with 1237490605649, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1237490605595 and 1237490605604.

It is not a weakly prime, because it can be changed into another prime (1237490605661) 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 as a sum of consecutive naturals, namely, 618745302825 + 618745302826.

It is an arithmetic number, because the mean of its divisors is an integer number (618745302826).

Almost surely, 2^{1237490605651} is an apocalyptic number.

1237490605651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1237490605651 is an equidigital number, since it uses as much as digits as its factorization.

1237490605651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 1237490605651 in words is "one trillion, two hundred thirty-seven billion, four hundred ninety million, six hundred five thousand, six hundred fifty-one".