253198989650 has 12 divisors (see below), whose sum is σ = 470950120842. Its totient is φ = 101279595840.

The previous prime is 253198989619. The next prime is 253198989661. The reversal of 253198989650 is 56989891352.

It can be written as a sum of positive squares in 3 ways, for example, as 104913153409 + 148285836241 = 323903^2 + 385079^2 .

It is a hoax number, since the sum of its digits (65) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2531989847 + ... + 2531989946.

Almost surely, 2^253198989650 is an apocalyptic number.

253198989650 is a deficient number, since it is larger than the sum of its proper divisors (217751131192).

253198989650 is a wasteful number, since it uses less digits than its factorization.

253198989650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5063979805 (or 5063979800 counting only the distinct ones).

The product of its (nonzero) digits is 41990400, while the sum is 65.

The spelling of 253198989650 in words is "two hundred fifty-three billion, one hundred ninety-eight million, nine hundred eighty-nine thousand, six hundred fifty".