245421631208 has 32 divisors (see below), whose sum is σ = 495587642760. Its totient is φ = 113265868800.

The previous prime is 245421631199. The next prime is 245421631211. The reversal of 245421631208 is 802136124542.

It can be written as a sum of positive squares in 4 ways, for example, as 191215547524 + 54206083684 = 437282^2 + 232822^2 .

It is a super-3 number, since 3×245421631208³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2616416 + ... + 2708592.

Almost surely, 2^245421631208 is an apocalyptic number.

It is an amenable number.

245421631208 is an abundant number, since it is smaller than the sum of its proper divisors (250166011552).

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

245421631208 is a wasteful number, since it uses less digits than its factorization.

245421631208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117797 (or 117793 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 245421631208 in words is "two hundred forty-five billion, four hundred twenty-one million, six hundred thirty-one thousand, two hundred eight".