381217007880 has 64 divisors (see below), whose sum is σ = 1270723363200. Its totient is φ = 101657868480.

The previous prime is 381217007879. The next prime is 381217007881. The reversal of 381217007880 is 88700712183.

It is an interprime number because it is at equal distance from previous prime (381217007879) and next prime (381217007881).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (381217007881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176488276 + ... + 176490435.

It is an arithmetic number, because the mean of its divisors is an integer number (19855052550).

Almost surely, 2^381217007880 is an apocalyptic number.

381217007880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

381217007880 is an abundant number, since it is smaller than the sum of its proper divisors (889506355320).

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

381217007880 is a wasteful number, since it uses less digits than its factorization.

381217007880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352978731 (or 352978721 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The spelling of 381217007880 in words is "three hundred eighty-one billion, two hundred seventeen million, seven thousand, eight hundred eighty".