1269673205140 has 48 divisors (see below), whose sum is σ = 2762480382480. Its totient is φ = 489605473280.

The previous prime is 1269673205081. The next prime is 1269673205149. The reversal of 1269673205140 is 415023769621.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 159402159504 + 1110271045636 = 399252^2 + 1053694^2 .

It is a super-2 number, since 2×1269673205140² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1269673205149) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1297441 + ... + 2054920.

It is an arithmetic number, because the mean of its divisors is an integer number (57551674635).

Almost surely, 2^{1269673205140} is an apocalyptic number.

1269673205140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1269673205140 is an abundant number, since it is smaller than the sum of its proper divisors (1492807177340).

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

1269673205140 is a wasteful number, since it uses less digits than its factorization.

1269673205140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3353052 (or 3353050 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 1269673205140 in words is "one trillion, two hundred sixty-nine billion, six hundred seventy-three million, two hundred five thousand, one hundred forty".