1370550505721 has 2 divisors, whose sum is σ = 1370550505722. Its totient is φ = 1370550505720.

The previous prime is 1370550505703. The next prime is 1370550505763. The reversal of 1370550505721 is 1275050550731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 768357433600 + 602193072121 = 876560^2 + 776011^2 .

It is a cyclic number.

It is not a de Polignac number, because 1370550505721 - 2⁶ = 1370550505657 is a prime.

It is not a weakly prime, because it can be changed into another prime (1370550505921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685275252860 + 685275252861.

It is an arithmetic number, because the mean of its divisors is an integer number (685275252861).

Almost surely, 2^{1370550505721} is an apocalyptic number.

It is an amenable number.

1370550505721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1370550505721 is an equidigital number, since it uses as much as digits as its factorization.

1370550505721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183750, while the sum is 41.

The spelling of 1370550505721 in words is "one trillion, three hundred seventy billion, five hundred fifty million, five hundred five thousand, seven hundred twenty-one".