20261244348 has 18 divisors (see below), whose sum is σ = 51215923304. Its totient is φ = 6753748104.

The previous prime is 20261244323. The next prime is 20261244379. The reversal of 20261244348 is 84344216202.

20261244348 is a `hidden beast` number, since 2 + 0 + 2 + 612 + 4 + 4 + 34 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 562812343 = 20261244348 / (2 + 0 + 2 + 6 + 1 + 2 + 4 + 4 + 3 + 4 + 8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 281406136 + ... + 281406207.

Almost surely, 2^20261244348 is an apocalyptic number.

It is an amenable number.

20261244348 is an abundant number, since it is smaller than the sum of its proper divisors (30954678956).

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

20261244348 is a wasteful number, since it uses less digits than its factorization.

20261244348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562812353 (or 562812348 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

The spelling of 20261244348 in words is "twenty billion, two hundred sixty-one million, two hundred forty-four thousand, three hundred forty-eight".