611261351916 has 12 divisors (see below), whose sum is σ = 1426276487832. Its totient is φ = 203753783968.

The previous prime is 611261351903. The next prime is 611261351927. The reversal of 611261351916 is 619153162116.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25469222985 + ... + 25469223008.

It is an arithmetic number, because the mean of its divisors is an integer number (118856373986).

Almost surely, 2^611261351916 is an apocalyptic number.

It is an amenable number.

611261351916 is an abundant number, since it is smaller than the sum of its proper divisors (815015135916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

611261351916 is a wasteful number, since it uses less digits than its factorization.

611261351916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50938446000 (or 50938445998 counting only the distinct ones).

The product of its digits is 58320, while the sum is 42.

The spelling of 611261351916 in words is "six hundred eleven billion, two hundred sixty-one million, three hundred fifty-one thousand, nine hundred sixteen".