612251544452 has 6 divisors (see below), whose sum is σ = 1071440202798. Its totient is φ = 306125772224.

The previous prime is 612251544397. The next prime is 612251544469. The reversal of 612251544452 is 254445152216.

It can be written as a sum of positive squares in only one way, i.e., 353675226436 + 258576318016 = 594706^2 + 508504^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76531443053 + ... + 76531443060.

It is an arithmetic number, because the mean of its divisors is an integer number (178573367133).

Almost surely, 2^612251544452 is an apocalyptic number.

It is an amenable number.

612251544452 is a deficient number, since it is larger than the sum of its proper divisors (459188658346).

612251544452 is a wasteful number, since it uses less digits than its factorization.

612251544452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153062886117 (or 153062886115 counting only the distinct ones).

The product of its digits is 384000, while the sum is 41.

Adding to 612251544452 its reverse (254445152216), we get a palindrome (866696696668).

The spelling of 612251544452 in words is "six hundred twelve billion, two hundred fifty-one million, five hundred forty-four thousand, four hundred fifty-two".