381615785503336 has 16 divisors (see below), whose sum is σ = 715547470127940. Its totient is φ = 190803126802560.

The previous prime is 381615785503243. The next prime is 381615785503399. The reversal of 381615785503336 is 633305587516183.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 307332244439236 + 74283541064100 = 17530894^2 + 8618790^2 .

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, 595403325 + ... + 596043916.

Almost surely, 2^{381615785503336} is an apocalyptic number.

It is an amenable number.

381615785503336 is a deficient number, since it is larger than the sum of its proper divisors (333931684624604).

381615785503336 is a wasteful number, since it uses less digits than its factorization.

381615785503336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191487284 (or 1191487280 counting only the distinct ones).

The product of its (nonzero) digits is 163296000, while the sum is 64.

The spelling of 381615785503336 in words is "three hundred eighty-one trillion, six hundred fifteen billion, seven hundred eighty-five million, five hundred three thousand, three hundred thirty-six".