249260231378 has 8 divisors (see below), whose sum is σ = 376051563468. Its totient is φ = 123909710224.

The previous prime is 249260231351. The next prime is 249260231417. The reversal of 249260231378 is 873132062942.

It can be written as a sum of positive squares in 2 ways, for example, as 227573840209 + 21686391169 = 477047^2 + 147263^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×249260231378² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360202301 + ... + 360202992.

Almost surely, 2^249260231378 is an apocalyptic number.

249260231378 is a deficient number, since it is larger than the sum of its proper divisors (126791332090).

249260231378 is a wasteful number, since it uses less digits than its factorization.

249260231378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720405468.

The product of its (nonzero) digits is 870912, while the sum is 47.

The spelling of 249260231378 in words is "two hundred forty-nine billion, two hundred sixty million, two hundred thirty-one thousand, three hundred seventy-eight".