1420615621291 has 2 divisors, whose sum is σ = 1420615621292. Its totient is φ = 1420615621290.

The previous prime is 1420615621283. The next prime is 1420615621349. The reversal of 1420615621291 is 1921265160241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1420615621291 - 2³ = 1420615621283 is a prime.

It is not a weakly prime, because it can be changed into another prime (1420615621231) by changing a digit.

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 as a sum of consecutive naturals, namely, 710307810645 + 710307810646.

It is an arithmetic number, because the mean of its divisors is an integer number (710307810646).

Almost surely, 2^{1420615621291} is an apocalyptic number.

1420615621291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420615621291 is an equidigital number, since it uses as much as digits as its factorization.

1420615621291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 1420615621291 in words is "one trillion, four hundred twenty billion, six hundred fifteen million, six hundred twenty-one thousand, two hundred ninety-one".