1345436221037 has 2 divisors, whose sum is σ = 1345436221038. Its totient is φ = 1345436221036.

The previous prime is 1345436220983. The next prime is 1345436221123. The reversal of 1345436221037 is 7301226345431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1285912908361 + 59523312676 = 1133981^2 + 243974^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345436221037 - 2⁸ = 1345436220781 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1345436220985 and 1345436221003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345436221537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672718110518 + 672718110519.

It is an arithmetic number, because the mean of its divisors is an integer number (672718110519).

Almost surely, 2^{1345436221037} is an apocalyptic number.

It is an amenable number.

1345436221037 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345436221037 is an equidigital number, since it uses as much as digits as its factorization.

1345436221037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 41.

The spelling of 1345436221037 in words is "one trillion, three hundred forty-five billion, four hundred thirty-six million, two hundred twenty-one thousand, thirty-seven".