381237641280 has 112 divisors (see below), whose sum is σ = 1344921709440. Its totient is φ = 101663368704.

The previous prime is 381237641243. The next prime is 381237641293. The reversal of 381237641280 is 82146732183.

381237641280 is a `hidden beast` number, since 3 + 81 + 237 + 64 + 1 + 280 = 666.

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

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, 22053724 + ... + 22071003.

Almost surely, 2^381237641280 is an apocalyptic number.

381237641280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

381237641280 is an abundant number, since it is smaller than the sum of its proper divisors (963684068160).

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

381237641280 is a wasteful number, since it uses less digits than its factorization.

381237641280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44124753 (or 44124737 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 381237641280 in words is "three hundred eighty-one billion, two hundred thirty-seven million, six hundred forty-one thousand, two hundred eighty".