20413102340 has 24 divisors (see below), whose sum is σ = 42961336152. Its totient is φ = 8147370240.

The previous prime is 20413102337. The next prime is 20413102387. The reversal of 20413102340 is 4320131402.

It can be written as a sum of positive squares in 4 ways, for example, as 4280038084 + 16133064256 = 65422^2 + 127016^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1107551 + ... + 1125830.

It is an arithmetic number, because the mean of its divisors is an integer number (1790055673).

Almost surely, 2^20413102340 is an apocalyptic number.

20413102340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20413102340 is an abundant number, since it is smaller than the sum of its proper divisors (22548233812).

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

20413102340 is a wasteful number, since it uses less digits than its factorization.

20413102340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233847 (or 2233845 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20413102340 its reverse (4320131402), we get a palindrome (24733233742).

The spelling of 20413102340 in words is "twenty billion, four hundred thirteen million, one hundred two thousand, three hundred forty".