611218334400381 has 16 divisors (see below), whose sum is σ = 905521213696320. Its totient is φ = 407473233037200.

The previous prime is 611218334400253. The next prime is 611218334400419. The reversal of 611218334400381 is 183004433812116.

611218334400381 is a `hidden beast` number, since 6 + 1 + 1 + 2 + 183 + 34 + 400 + 38 + 1 = 666.

It is not a de Polignac number, because 611218334400381 - 2⁷ = 611218334400253 is a prime.

It is a super-2 number, since 2×611218334400381² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611218334000381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155145295 + ... + 159036156.

It is an arithmetic number, because the mean of its divisors is an integer number (56595075856020).

Almost surely, 2^{611218334400381} is an apocalyptic number.

It is an amenable number.

611218334400381 is a deficient number, since it is larger than the sum of its proper divisors (294302879295939).

611218334400381 is a wasteful number, since it uses less digits than its factorization.

611218334400381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314253513 (or 314253507 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 611218334400381 in words is "six hundred eleven trillion, two hundred eighteen billion, three hundred thirty-four million, four hundred thousand, three hundred eighty-one".