249519781032 has 16 divisors (see below), whose sum is σ = 623799452640. Its totient is φ = 83173260336.

The previous prime is 249519780977. The next prime is 249519781033. The reversal of 249519781032 is 230187915942.

It is a super-2 number, since 2×249519781032² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (249519781033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5198328748 + ... + 5198328795.

It is an arithmetic number, because the mean of its divisors is an integer number (38987465790).

Almost surely, 2^249519781032 is an apocalyptic number.

It is an amenable number.

249519781032 is an abundant number, since it is smaller than the sum of its proper divisors (374279671608).

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

249519781032 is a wasteful number, since it uses less digits than its factorization.

249519781032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10396657552 (or 10396657548 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 249519781032 in words is "two hundred forty-nine billion, five hundred nineteen million, seven hundred eighty-one thousand, thirty-two".