611402665452 has 12 divisors (see below), whose sum is σ = 1426606219416. Its totient is φ = 203800888480.

The previous prime is 611402665429. The next prime is 611402665459. The reversal of 611402665452 is 254566204116.

611402665452 is digitally balanced in base 2 and base 4, because in such bases 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 (12).

It is not an unprimeable number, because it can be changed into a prime (611402665459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25475111049 + ... + 25475111072.

It is an arithmetic number, because the mean of its divisors is an integer number (118883851618).

Almost surely, 2^611402665452 is an apocalyptic number.

It is an amenable number.

611402665452 is an abundant number, since it is smaller than the sum of its proper divisors (815203553964).

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

611402665452 is a wasteful number, since it uses less digits than its factorization.

611402665452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50950222128 (or 50950222126 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

Adding to 611402665452 its reverse (254566204116), we get a palindrome (865968869568).

The spelling of 611402665452 in words is "six hundred eleven billion, four hundred two million, six hundred sixty-five thousand, four hundred fifty-two".