381215047720 has 64 divisors (see below), whose sum is σ = 972329904000. Its totient is φ = 133348094208.

The previous prime is 381215047691. The next prime is 381215047751. The reversal of 381215047720 is 27740512183.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 19282380 + ... + 19302139.

It is an arithmetic number, because the mean of its divisors is an integer number (15192654750).

Almost surely, 2^381215047720 is an apocalyptic number.

It is an amenable number.

381215047720 is an abundant number, since it is smaller than the sum of its proper divisors (591114856280).

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

381215047720 is a wasteful number, since it uses less digits than its factorization.

381215047720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38584562 (or 38584558 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 381215047720 in words is "three hundred eighty-one billion, two hundred fifteen million, forty-seven thousand, seven hundred twenty".