253657765005 has 16 divisors (see below), whose sum is σ = 406864534464. Its totient is φ = 134946771200.

The previous prime is 253657765003. The next prime is 253657765057. The reversal of 253657765005 is 500567756352.

It is not a de Polignac number, because 253657765005 - 2¹ = 253657765003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253657765003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21079419 + ... + 21091448.

It is an arithmetic number, because the mean of its divisors is an integer number (25429033404).

Almost surely, 2^253657765005 is an apocalyptic number.

It is an amenable number.

253657765005 is a deficient number, since it is larger than the sum of its proper divisors (153206769459).

253657765005 is a wasteful number, since it uses less digits than its factorization.

253657765005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42171276.

The product of its (nonzero) digits is 6615000, while the sum is 51.

The spelling of 253657765005 in words is "two hundred fifty-three billion, six hundred fifty-seven million, seven hundred sixty-five thousand, five".