153121866 has 16 divisors (see below), whose sum is σ = 310557888. Its totient is φ = 50321600.

The previous prime is 153121853. The next prime is 153121877. The reversal of 153121866 is 668121351.

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, 179295 + ... + 180146.

It is an arithmetic number, because the mean of its divisors is an integer number (19409868).

Almost surely, 2^153121866 is an apocalyptic number.

153121866 is an abundant number, since it is smaller than the sum of its proper divisors (157436022).

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

153121866 is a wasteful number, since it uses less digits than its factorization.

153121866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359517.

The product of its digits is 8640, while the sum is 33.

The square root of 153121866 is about 12374.2420373936. The cubic root of 153121866 is about 534.9900903629.

The spelling of 153121866 in words is "one hundred fifty-three million, one hundred twenty-one thousand, eight hundred sixty-six".