611947843136 has 56 divisors (see below), whose sum is σ = 1401551086656. Its totient is φ = 259666675200.

The previous prime is 611947843121. The next prime is 611947843141. The reversal of 611947843136 is 631348749116.

It is a happy number.

611947843136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6716906 + ... + 6807401.

It is an arithmetic number, because the mean of its divisors is an integer number (25027697976).

Almost surely, 2^611947843136 is an apocalyptic number.

It is an amenable number.

611947843136 is an abundant number, since it is smaller than the sum of its proper divisors (789603243520).

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

611947843136 is a wasteful number, since it uses less digits than its factorization.

611947843136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13524427 (or 13524417 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 53.

The spelling of 611947843136 in words is "six hundred eleven billion, nine hundred forty-seven million, eight hundred forty-three thousand, one hundred thirty-six".