249471295536 has 40 divisors (see below), whose sum is σ = 644865779520. Its totient is φ = 83105709376.

The previous prime is 249471295523. The next prime is 249471295559. The reversal of 249471295536 is 635592174942.

It is a super-4 number, since 4×249471295536⁴ (a number of 47 digits) contains 4444 as substring.

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, 1527390 + ... + 1682813.

It is an arithmetic number, because the mean of its divisors is an integer number (16121644488).

Almost surely, 2^249471295536 is an apocalyptic number.

It is an amenable number.

249471295536 is an abundant number, since it is smaller than the sum of its proper divisors (395394483984).

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

249471295536 is a wasteful number, since it uses less digits than its factorization.

249471295536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3211833 (or 3211827 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 57.

The spelling of 249471295536 in words is "two hundred forty-nine billion, four hundred seventy-one million, two hundred ninety-five thousand, five hundred thirty-six".