381064723240 has 32 divisors (see below), whose sum is σ = 859113900000. Its totient is φ = 152120418624.

The previous prime is 381064723217. The next prime is 381064723241. The reversal of 381064723240 is 42327460183.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 381064723193 and 381064723202.

It is not an unprimeable number, because it can be changed into a prime (381064723241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9525750 + ... + 9565669.

It is an arithmetic number, because the mean of its divisors is an integer number (26847309375).

Almost surely, 2^381064723240 is an apocalyptic number.

It is an amenable number.

381064723240 is an abundant number, since it is smaller than the sum of its proper divisors (478049176760).

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

381064723240 is a wasteful number, since it uses less digits than its factorization.

381064723240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19091929 (or 19091925 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 381064723240 in words is "three hundred eighty-one billion, sixty-four million, seven hundred twenty-three thousand, two hundred forty".