1269450349680 has 80 divisors (see below), whose sum is σ = 4062241142784. Its totient is φ = 327600088320.

The previous prime is 1269450349667. The next prime is 1269450349693. The reversal of 1269450349680 is 869430549621.

It is an interprime number because it is at equal distance from previous prime (1269450349667) and next prime (1269450349693).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1269450349680² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1269450349680.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85305084 + ... + 85319963.

Almost surely, 2^{1269450349680} is an apocalyptic number.

1269450349680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1269450349680 is an abundant number, since it is smaller than the sum of its proper divisors (2792790793104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1269450349680 is a wasteful number, since it uses less digits than its factorization.

1269450349680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170625094 (or 170625088 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 57.

The spelling of 1269450349680 in words is "one trillion, two hundred sixty-nine billion, four hundred fifty million, three hundred forty-nine thousand, six hundred eighty".