381427197040 has 20 divisors (see below), whose sum is σ = 886818233304. Its totient is φ = 152570878784.

The previous prime is 381427196987. The next prime is 381427197079. The reversal of 381427197040 is 40791724183.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2383919902 + ... + 2383920061.

Almost surely, 2^381427197040 is an apocalyptic number.

It is an amenable number.

381427197040 is an abundant number, since it is smaller than the sum of its proper divisors (505391036264).

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

381427197040 is a wasteful number, since it uses less digits than its factorization.

381427197040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4767839976 (or 4767839970 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 381427197040 in words is "three hundred eighty-one billion, four hundred twenty-seven million, one hundred ninety-seven thousand, forty".