6538732378356 has 48 divisors (see below), whose sum is σ = 15500445387840. Its totient is φ = 2145056640000.

The previous prime is 6538732378349. The next prime is 6538732378363.

6538732378356 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (6538732378349) and next prime (6538732378363).

It is a super-2 number, since 2×6538732378356² (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 15 ways as a sum of consecutive naturals, for example, 15482895 + ... + 15899606.

It is an arithmetic number, because the mean of its divisors is an integer number (322925945580).

Almost surely, 2^{6538732378356} is an apocalyptic number.

It is an amenable number.

6538732378356 is an abundant number, since it is smaller than the sum of its proper divisors (8961713009484).

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

6538732378356 is a wasteful number, since it uses less digits than its factorization.

6538732378356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31382784 (or 31382782 counting only the distinct ones).

The product of its digits is 457228800, while the sum is 66.

The spelling of 6538732378356 in words is "six trillion, five hundred thirty-eight billion, seven hundred thirty-two million, three hundred seventy-eight thousand, three hundred fifty-six".