611228907851 has 2 divisors, whose sum is σ = 611228907852. Its totient is φ = 611228907850.

The previous prime is 611228907841. The next prime is 611228907871. The reversal of 611228907851 is 158709822116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 611228907851 - 2¹⁴ = 611228891467 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 611228907851.

It is not a weakly prime, because it can be changed into another prime (611228907811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305614453925 + 305614453926.

It is an arithmetic number, because the mean of its divisors is an integer number (305614453926).

Almost surely, 2^611228907851 is an apocalyptic number.

611228907851 is a deficient number, since it is larger than the sum of its proper divisors (1).

611228907851 is an equidigital number, since it uses as much as digits as its factorization.

611228907851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 50.

The spelling of 611228907851 in words is "six hundred eleven billion, two hundred twenty-eight million, nine hundred seven thousand, eight hundred fifty-one".