611401251205 has 16 divisors (see below), whose sum is σ = 742768185600. Its totient is φ = 483067135168.

The previous prime is 611401251193. The next prime is 611401251221. The reversal of 611401251205 is 502152104116.

611401251205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 611401251205 - 2⁷ = 611401251077 is a prime.

It is a super-2 number, since 2×611401251205² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1010871 + ... + 1498219.

It is an arithmetic number, because the mean of its divisors is an integer number (46423011600).

Almost surely, 2^611401251205 is an apocalyptic number.

It is an amenable number.

611401251205 is a deficient number, since it is larger than the sum of its proper divisors (131366934395).

611401251205 is a wasteful number, since it uses less digits than its factorization.

611401251205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490460.

The product of its (nonzero) digits is 2400, while the sum is 28.

The spelling of 611401251205 in words is "six hundred eleven billion, four hundred one million, two hundred fifty-one thousand, two hundred five".