1298376421973 has 4 divisors (see below), whose sum is σ = 1328571222528. Its totient is φ = 1268181621420.

The previous prime is 1298376421961. The next prime is 1298376422029. The reversal of 1298376421973 is 3791246738921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1298376421973 - 2¹⁰ = 1298376420949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298376421913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15097400213 + ... + 15097400298.

It is an arithmetic number, because the mean of its divisors is an integer number (332142805632).

Almost surely, 2^{1298376421973} is an apocalyptic number.

It is an amenable number.

1298376421973 is a deficient number, since it is larger than the sum of its proper divisors (30194800555).

1298376421973 is an equidigital number, since it uses as much as digits as its factorization.

1298376421973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30194800554.

The product of its digits is 27433728, while the sum is 62.

The spelling of 1298376421973 in words is "one trillion, two hundred ninety-eight billion, three hundred seventy-six million, four hundred twenty-one thousand, nine hundred seventy-three".