3975012003840 has 208 divisors, whose sum is σ = 13466635427808. Its totient is φ = 997649809408.

The previous prime is 3975012003821. The next prime is 3975012003869. The reversal of 3975012003840 is 483002105793.

It is a junction number, because it is equal to n+sod(n) for n = 3975012003792 and 3975012003801.

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, 858387 + ... + 2947346.

Almost surely, 2^{3975012003840} is an apocalyptic number.

3975012003840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3975012003840 is an abundant number, since it is smaller than the sum of its proper divisors (9491623423968).

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

3975012003840 is a wasteful number, since it uses less digits than its factorization.

3975012003840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3805782 (or 3805760 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 3975012003840 in words is "three trillion, nine hundred seventy-five billion, twelve million, three thousand, eight hundred forty".