611401206321 has 48 divisors (see below), whose sum is σ = 964438675200. Its totient is φ = 385990885008.

The previous prime is 611401206307. The next prime is 611401206323. The reversal of 611401206321 is 123602104116.

It is a happy number.

611401206321 is a `hidden beast` number, since 6 + 1 + 1 + 4 + 0 + 1 + 20 + 632 + 1 = 666.

It is not a de Polignac number, because 611401206321 - 2⁷ = 611401206193 is a prime.

It is a super-2 number, since 2×611401206321² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (611401206323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11881570 + ... + 11932916.

It is an arithmetic number, because the mean of its divisors is an integer number (20092472400).

Almost surely, 2^611401206321 is an apocalyptic number.

It is an amenable number.

611401206321 is a deficient number, since it is larger than the sum of its proper divisors (353037468879).

611401206321 is a wasteful number, since it uses less digits than its factorization.

611401206321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53960 (or 53948 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 611401206321 in words is "six hundred eleven billion, four hundred one million, two hundred six thousand, three hundred twenty-one".