3391557252736 has 128 divisors (see below), whose sum is σ = 7188658794000. Its totient is φ = 1593840271360.

The previous prime is 3391557252731. The next prime is 3391557252767. The reversal of 3391557252736 is 6372527551933.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2242973494336 + 1148583758400 = 1497656^2 + 1071720^2 .

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (3391557252731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 516294060 + ... + 516300628.

Almost surely, 2^{3391557252736} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3391557252736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3594329397000).

3391557252736 is an abundant number, since it is smaller than the sum of its proper divisors (3797101541264).

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

3391557252736 is an frugal number, since it uses more digits than its factorization.

3391557252736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7455 (or 7409 counting only the distinct ones).

The product of its digits is 35721000, while the sum is 58.

The spelling of 3391557252736 in words is "three trillion, three hundred ninety-one billion, five hundred fifty-seven million, two hundred fifty-two thousand, seven hundred thirty-six".