20541101240 has 64 divisors (see below), whose sum is σ = 50918375520. Its totient is φ = 7395520000.

The previous prime is 20541101221. The next prime is 20541101261. The reversal of 20541101240 is 4210114502.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186671 + ... + 275550.

Almost surely, 2^20541101240 is an apocalyptic number.

20541101240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20541101240 is an abundant number, since it is smaller than the sum of its proper divisors (30377274280).

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

20541101240 is a wasteful number, since it uses less digits than its factorization.

20541101240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462344 (or 462340 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 20541101240 its reverse (4210114502), we get a palindrome (24751215742).

The spelling of 20541101240 in words is "twenty billion, five hundred forty-one million, one hundred one thousand, two hundred forty".