205128051248 has 10 divisors (see below), whose sum is σ = 397435599324. Its totient is φ = 102564025616.

The previous prime is 205128051221. The next prime is 205128051259. The reversal of 205128051248 is 842150821502.

It is a happy number.

It is a super-2 number, since 2×205128051248² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6410251586 + ... + 6410251617.

Almost surely, 2^205128051248 is an apocalyptic number.

It is an amenable number.

205128051248 is a deficient number, since it is larger than the sum of its proper divisors (192307548076).

205128051248 is a wasteful number, since it uses less digits than its factorization.

205128051248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12820503211 (or 12820503205 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 38.

The spelling of 205128051248 in words is "two hundred five billion, one hundred twenty-eight million, fifty-one thousand, two hundred forty-eight".