245221555630 has 16 divisors (see below), whose sum is σ = 467363435760. Its totient is φ = 92318703232.

The previous prime is 245221555451. The next prime is 245221555633. The reversal of 245221555630 is 36555122542.

It is a super-2 number, since 2×245221555630² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245221555633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721239700 + ... + 721240039.

It is an arithmetic number, because the mean of its divisors is an integer number (29210214735).

Almost surely, 2^245221555630 is an apocalyptic number.

245221555630 is a deficient number, since it is larger than the sum of its proper divisors (222141880130).

245221555630 is a wasteful number, since it uses less digits than its factorization.

245221555630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442479763.

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 245221555630 in words is "two hundred forty-five billion, two hundred twenty-one million, five hundred fifty-five thousand, six hundred thirty".