20115724410 has 128 divisors (see below), whose sum is σ = 54813024000. Its totient is φ = 5247680256.

The previous prime is 20115724367. The next prime is 20115724451. The reversal of 20115724410 is 1442751102.

20115724410 is a `hidden beast` number, since 201 + 15 + 7 + 2 + 441 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5421636 + ... + 5425344.

It is an arithmetic number, because the mean of its divisors is an integer number (428226750).

Almost surely, 2^20115724410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20115724410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27406512000).

20115724410 is an abundant number, since it is smaller than the sum of its proper divisors (34697299590).

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

20115724410 is a wasteful number, since it uses less digits than its factorization.

20115724410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4157 (or 4151 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The spelling of 20115724410 in words is "twenty billion, one hundred fifteen million, seven hundred twenty-four thousand, four hundred ten".