1538431055345 has 8 divisors (see below), whose sum is σ = 1846125380160. Its totient is φ = 1230739435120.

The previous prime is 1538431055303. The next prime is 1538431055377. The reversal of 1538431055345 is 5435501348351.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1538431055345 is a prime.

It is a super-3 number, since 3×1538431055345³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1538431055345.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 916166 + ... + 1978944.

It is an arithmetic number, because the mean of its divisors is an integer number (230765672520).

Almost surely, 2^{1538431055345} is an apocalyptic number.

It is an amenable number.

1538431055345 is a deficient number, since it is larger than the sum of its proper divisors (307694324815).

1538431055345 is a wasteful number, since it uses less digits than its factorization.

1538431055345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352295.

The product of its (nonzero) digits is 2160000, while the sum is 47.

The spelling of 1538431055345 in words is "one trillion, five hundred thirty-eight billion, four hundred thirty-one million, fifty-five thousand, three hundred forty-five".