1420320239977 has 2 divisors, whose sum is σ = 1420320239978. Its totient is φ = 1420320239976.

The previous prime is 1420320239957. The next prime is 1420320240037. The reversal of 1420320239977 is 7799320230241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1372672335321 + 47647904656 = 1171611^2 + 218284^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420320239977 - 2²³ = 1420311851369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1420320239977.

It is not a weakly prime, because it can be changed into another prime (1420320239957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710160119988 + 710160119989.

It is an arithmetic number, because the mean of its divisors is an integer number (710160119989).

Almost surely, 2^{1420320239977} is an apocalyptic number.

It is an amenable number.

1420320239977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420320239977 is an equidigital number, since it uses as much as digits as its factorization.

1420320239977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The spelling of 1420320239977 in words is "one trillion, four hundred twenty billion, three hundred twenty million, two hundred thirty-nine thousand, nine hundred seventy-seven".