20261504354 has 64 divisors (see below), whose sum is σ = 39765116160. Its totient is φ = 7518355200.

The previous prime is 20261504317. The next prime is 20261504359. The reversal of 20261504354 is 45340516202.

It is a self number, because there is not a number n which added to its sum of digits gives 20261504354.

It is not an unprimeable number, because it can be changed into a prime (20261504359) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 320252 + ... + 378264.

It is an arithmetic number, because the mean of its divisors is an integer number (621329940).

Almost surely, 2^20261504354 is an apocalyptic number.

20261504354 is a deficient number, since it is larger than the sum of its proper divisors (19503611806).

20261504354 is a wasteful number, since it uses less digits than its factorization.

20261504354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58155.

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 20261504354 in words is "twenty billion, two hundred sixty-one million, five hundred four thousand, three hundred fifty-four".