3947121730600 has 96 divisors (see below), whose sum is σ = 9267502645440. Its totient is φ = 1563292800000.

The previous prime is 3947121730597. The next prime is 3947121730603. The reversal of 3947121730600 is 60371217493.

It is an interprime number because it is at equal distance from previous prime (3947121730597) and next prime (3947121730603).

It is not an unprimeable number, because it can be changed into a prime (3947121730603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 255452875 + ... + 255468325.

It is an arithmetic number, because the mean of its divisors is an integer number (96536485890).

Almost surely, 2^{3947121730600} 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 3947121730600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4633751322720).

3947121730600 is an abundant number, since it is smaller than the sum of its proper divisors (5320380914840).

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

3947121730600 is a wasteful number, since it uses less digits than its factorization.

3947121730600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27971 (or 27962 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 43.

The spelling of 3947121730600 in words is "three trillion, nine hundred forty-seven billion, one hundred twenty-one million, seven hundred thirty thousand, six hundred".