1298376253405 has 64 divisors (see below), whose sum is σ = 2009925550080. Its totient is φ = 781297977600.

The previous prime is 1298376253333. The next prime is 1298376253411. The reversal of 1298376253405 is 5043526738921.

It is not a de Polignac number, because 1298376253405 - 2⁷ = 1298376253277 is a prime.

It is a super-3 number, since 3×1298376253405³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 67505140 + ... + 67524370.

It is an arithmetic number, because the mean of its divisors is an integer number (31405086720).

It is a 1-persistent number, because it is pandigital, but 2⋅1298376253405 = 2596752506810 is not.

Almost surely, 2^{1298376253405} is an apocalyptic number.

It is an amenable number.

1298376253405 is a deficient number, since it is larger than the sum of its proper divisors (711549296675).

1298376253405 is a wasteful number, since it uses less digits than its factorization.

1298376253405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25330.

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 1298376253405 in words is "one trillion, two hundred ninety-eight billion, three hundred seventy-six million, two hundred fifty-three thousand, four hundred five".