3498699925728 has 576 divisors, whose sum is σ = 12223755048960. Its totient is φ = 926503059456.

The previous prime is 3498699925691. The next prime is 3498699925733. The reversal of 3498699925728 is 8275299968943.

3498699925728 is a `hidden beast` number, since 34 + 9 + 8 + 6 + 9 + 9 + 9 + 2 + 572 + 8 = 666.

It is a super-2 number, since 2×3498699925728² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1199415726 + ... + 1199418642.

It is an arithmetic number, because the mean of its divisors is an integer number (21221796960).

Almost surely, 2^{3498699925728} 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 3498699925728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6111877524480).

3498699925728 is an abundant number, since it is smaller than the sum of its proper divisors (8725055123232).

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

3498699925728 is a wasteful number, since it uses less digits than its factorization.

3498699925728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479 (or 3468 counting only the distinct ones).

The product of its digits is 4232632320, while the sum is 81.

The spelling of 3498699925728 in words is "three trillion, four hundred ninety-eight billion, six hundred ninety-nine million, nine hundred twenty-five thousand, seven hundred twenty-eight".