20112451541 has 12 divisors (see below), whose sum is σ = 24889797792. Its totient is φ = 15913147536.

The previous prime is 20112451537. The next prime is 20112451553. The reversal of 20112451541 is 14515421102.

It is a happy number.

It is not a de Polignac number, because 20112451541 - 2² = 20112451537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20112451541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112451571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8499431 + ... + 8501796.

It is an arithmetic number, because the mean of its divisors is an integer number (2074149816).

Almost surely, 2^20112451541 is an apocalyptic number.

It is an amenable number.

20112451541 is a deficient number, since it is larger than the sum of its proper divisors (4777346251).

20112451541 is a wasteful number, since it uses less digits than its factorization.

20112451541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17001260 (or 17001247 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 20112451541 its reverse (14515421102), we get a palindrome (34627872643).

The spelling of 20112451541 in words is "twenty billion, one hundred twelve million, four hundred fifty-one thousand, five hundred forty-one".