3861495547968 has 224 divisors, whose sum is σ = 10521305856000. Its totient is φ = 1249303357440.

The previous prime is 3861495547961. The next prime is 3861495548023. The reversal of 3861495547968 is 8697455941683.

It is a super-2 number, since 2×3861495547968² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3861495547968.

It is not an unprimeable number, because it can be changed into a prime (3861495547961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 733982458 + ... + 733987718.

Almost surely, 2^{3861495547968} 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 3861495547968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5260652928000).

3861495547968 is an abundant number, since it is smaller than the sum of its proper divisors (6659810308032).

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

3861495547968 is a wasteful number, since it uses less digits than its factorization.

3861495547968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5985 (or 5975 counting only the distinct ones).

The product of its digits is 1567641600, while the sum is 75.

The spelling of 3861495547968 in words is "three trillion, eight hundred sixty-one billion, four hundred ninety-five million, five hundred forty-seven thousand, nine hundred sixty-eight".