381787698011 has 36 divisors (see below), whose sum is σ = 428509072368. Its totient is φ = 340041417984.

The previous prime is 381787698007. The next prime is 381787698029. The reversal of 381787698011 is 110896787183.

It is not a de Polignac number, because 381787698011 - 2² = 381787698007 is a prime.

It is a super-2 number, since 2×381787698011² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (381787698211) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 142616405 + ... + 142619081.

It is an arithmetic number, because the mean of its divisors is an integer number (11903029788).

Almost surely, 2^381787698011 is an apocalyptic number.

381787698011 is a deficient number, since it is larger than the sum of its proper divisors (46721374357).

381787698011 is a wasteful number, since it uses less digits than its factorization.

381787698011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4116 (or 4080 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 59.

The spelling of 381787698011 in words is "three hundred eighty-one billion, seven hundred eighty-seven million, six hundred ninety-eight thousand, eleven".