249554117652 has 24 divisors (see below), whose sum is σ = 665477647296. Its totient is φ = 71301176448.

The previous prime is 249554117639. The next prime is 249554117653. The reversal of 249554117652 is 256711455942.

It is a junction number, because it is equal to n+sod(n) for n = 249554117595 and 249554117604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249554117653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1485441093 + ... + 1485441260.

It is an arithmetic number, because the mean of its divisors is an integer number (27728235304).

Almost surely, 2^249554117652 is an apocalyptic number.

It is an amenable number.

249554117652 is an abundant number, since it is smaller than the sum of its proper divisors (415923529644).

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

249554117652 is a wasteful number, since it uses less digits than its factorization.

249554117652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970882367 (or 2970882365 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 51.

The spelling of 249554117652 in words is "two hundred forty-nine billion, five hundred fifty-four million, one hundred seventeen thousand, six hundred fifty-two".