611898605439 has 32 divisors (see below), whose sum is σ = 953832374784. Its totient is φ = 345136682880.

The previous prime is 611898605363. The next prime is 611898605443. The reversal of 611898605439 is 934506898116.

It is not a de Polignac number, because 611898605439 - 2¹² = 611898601343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611898615439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10866384 + ... + 10922549.

It is an arithmetic number, because the mean of its divisors is an integer number (29807261712).

Almost surely, 2^611898605439 is an apocalyptic number.

611898605439 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

611898605439 is a deficient number, since it is larger than the sum of its proper divisors (341933769345).

611898605439 is a wasteful number, since it uses less digits than its factorization.

611898605439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21789007.

The product of its (nonzero) digits is 11197440, while the sum is 60.

The spelling of 611898605439 in words is "six hundred eleven billion, eight hundred ninety-eight million, six hundred five thousand, four hundred thirty-nine".