20477641541 has 8 divisors (see below), whose sum is σ = 23464126464. Its totient is φ = 17506433520.

The previous prime is 20477641537. The next prime is 20477641549. The reversal of 20477641541 is 14514677402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20477641541 - 2² = 20477641537 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20477641549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3816350 + ... + 3821711.

It is an arithmetic number, because the mean of its divisors is an integer number (2933015808).

Almost surely, 2^20477641541 is an apocalyptic number.

It is an amenable number.

20477641541 is a deficient number, since it is larger than the sum of its proper divisors (2986484923).

20477641541 is an equidigital number, since it uses as much as digits as its factorization.

20477641541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7638451.

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 20477641541 in words is "twenty billion, four hundred seventy-seven million, six hundred forty-one thousand, five hundred forty-one".