13952421266436 has 27 divisors (see below), whose sum is σ = 35268677075541. Its totient is φ = 4650799618224.

The previous prime is 13952421266431. The next prime is 13952421266447. The reversal of 13952421266436 is 63466212425931.

The square root of 13952421266436 is 3735294.

It is a perfect power (a square), and thus also a powerful number.

13952421266436 is a `hidden beast` number, since 1 + 3 + 9 + 524 + 2 + 1 + 26 + 64 + 36 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12981565764036 + 970855502400 = 3602994^2 + 985320^2 .

It is not an unprimeable number, because it can be changed into a prime (13952421266431) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 22100490 + ... + 22723038.

Almost surely, 2^{13952421266436} is an apocalyptic number.

13952421266436 is the 3735294-th square number.

It is an amenable number.

13952421266436 is an abundant number, since it is smaller than the sum of its proper divisors (21316255809105).

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

13952421266436 is an frugal number, since it uses more digits than its factorization.

13952421266436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245108 (or 622554 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 54.

The spelling of 13952421266436 in words is "thirteen trillion, nine hundred fifty-two billion, four hundred twenty-one million, two hundred sixty-six thousand, four hundred thirty-six".