1269395409445 has 16 divisors (see below), whose sum is σ = 1566360778752. Its totient is φ = 986980493440.

The previous prime is 1269395409439. The next prime is 1269395409487. The reversal of 1269395409445 is 5449045939621.

It is a happy number.

It is not a de Polignac number, because 1269395409445 - 2³ = 1269395409437 is a prime.

It is a super-2 number, since 2×1269395409445² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11718277 + ... + 11826106.

It is an arithmetic number, because the mean of its divisors is an integer number (97897548672).

Almost surely, 2^{1269395409445} is an apocalyptic number.

It is an amenable number.

1269395409445 is a deficient number, since it is larger than the sum of its proper divisors (296965369307).

1269395409445 is a wasteful number, since it uses less digits than its factorization.

1269395409445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23544692.

The product of its (nonzero) digits is 41990400, while the sum is 61.

The spelling of 1269395409445 in words is "one trillion, two hundred sixty-nine billion, three hundred ninety-five million, four hundred nine thousand, four hundred forty-five".