611621332456 has 16 divisors (see below), whose sum is σ = 1155160730340. Its totient is φ = 303578471040.

The previous prime is 611621332453. The next prime is 611621332459. The reversal of 611621332456 is 654233126116.

It is an interprime number because it is at equal distance from previous prime (611621332453) and next prime (611621332459).

It can be written as a sum of positive squares in 2 ways, for example, as 530470415556 + 81150916900 = 728334^2 + 284870^2 .

It is not an unprimeable number, because it can be changed into a prime (611621332453) 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, 279023235 + ... + 279025426.

Almost surely, 2^611621332456 is an apocalyptic number.

It is an amenable number.

611621332456 is a deficient number, since it is larger than the sum of its proper divisors (543539397884).

611621332456 is a wasteful number, since it uses less digits than its factorization.

611621332456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558048804 (or 558048800 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The spelling of 611621332456 in words is "six hundred eleven billion, six hundred twenty-one million, three hundred thirty-two thousand, four hundred fifty-six".