21048104730 has 16 divisors (see below), whose sum is σ = 50515451424. Its totient is φ = 5612827920.

The previous prime is 21048104729. The next prime is 21048104731. The reversal of 21048104730 is 3740184012.

It is an interprime number because it is at equal distance from previous prime (21048104729) and next prime (21048104731).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 701603491 = 21048104730 / (2 + 1 + 0 + 4 + 8 + 1 + 0 + 4 + 7 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (21048104731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350801716 + ... + 350801775.

It is an arithmetic number, because the mean of its divisors is an integer number (3157215714).

Almost surely, 2^21048104730 is an apocalyptic number.

21048104730 is an abundant number, since it is smaller than the sum of its proper divisors (29467346694).

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

21048104730 is a wasteful number, since it uses less digits than its factorization.

21048104730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701603501.

The product of its (nonzero) digits is 5376, while the sum is 30.

Adding to 21048104730 its reverse (3740184012), we get a palindrome (24788288742).

The spelling of 21048104730 in words is "twenty-one billion, forty-eight million, one hundred four thousand, seven hundred thirty".