1346128955809 has 32 divisors (see below), whose sum is σ = 1550285568000. Its totient is φ = 1155980145600.

The previous prime is 1346128955777. The next prime is 1346128955813. The reversal of 1346128955809 is 9085598216431.

It is a cyclic number.

It is not a de Polignac number, because 1346128955809 - 2⁵ = 1346128955777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1346128955879) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 210691587 + ... + 210697975.

It is an arithmetic number, because the mean of its divisors is an integer number (48446424000).

Almost surely, 2^{1346128955809} is an apocalyptic number.

1346128955809 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1346128955809 is a deficient number, since it is larger than the sum of its proper divisors (204156612191).

1346128955809 is a wasteful number, since it uses less digits than its factorization.

1346128955809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9189.

The product of its (nonzero) digits is 18662400, while the sum is 61.

The spelling of 1346128955809 in words is "one trillion, three hundred forty-six billion, one hundred twenty-eight million, nine hundred fifty-five thousand, eight hundred nine".