642626550224 has 10 divisors (see below), whose sum is σ = 1245088941090. Its totient is φ = 321313275104.

The previous prime is 642626550191. The next prime is 642626550229. The reversal of 642626550224 is 422055626246.

It can be written as a sum of positive squares in only one way, i.e., 486813198400 + 155813351824 = 697720^2 + 394732^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642626550229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20082079679 + ... + 20082079710.

It is an arithmetic number, because the mean of its divisors is an integer number (124508894109).

Almost surely, 2^642626550224 is an apocalyptic number.

It is an amenable number.

642626550224 is a deficient number, since it is larger than the sum of its proper divisors (602462390866).

642626550224 is a wasteful number, since it uses less digits than its factorization.

642626550224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40164159397 (or 40164159391 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 44.

The spelling of 642626550224 in words is "six hundred forty-two billion, six hundred twenty-six million, five hundred fifty thousand, two hundred twenty-four".