1355997984007 has 4 divisors (see below), whose sum is σ = 1359883365400. Its totient is φ = 1352112602616.

The previous prime is 1355997983929. The next prime is 1355997984037. The reversal of 1355997984007 is 7004897995531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1355997984007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355997984037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1942690173 + ... + 1942690870.

It is an arithmetic number, because the mean of its divisors is an integer number (339970841350).

Almost surely, 2^{1355997984007} is an apocalyptic number.

1355997984007 is a deficient number, since it is larger than the sum of its proper divisors (3885381393).

1355997984007 is an equidigital number, since it uses as much as digits as its factorization.

1355997984007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3885381392.

The product of its (nonzero) digits is 85730400, while the sum is 67.

The spelling of 1355997984007 in words is "one trillion, three hundred fifty-five billion, nine hundred ninety-seven million, nine hundred eighty-four thousand, seven".