20151534441 has 24 divisors (see below), whose sum is σ = 27387282784. Its totient is φ = 13177503360.

The previous prime is 20151534437. The next prime is 20151534461. The reversal of 20151534441 is 14443515102.

It is not a de Polignac number, because 20151534441 - 2² = 20151534437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20151534399 and 20151534408.

It is not an unprimeable number, because it can be changed into a prime (20151534401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8497986 + ... + 8500356.

Almost surely, 2^20151534441 is an apocalyptic number.

It is an amenable number.

20151534441 is a deficient number, since it is larger than the sum of its proper divisors (7235748343).

20151534441 is an equidigital number, since it uses as much as digits as its factorization.

20151534441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2841 (or 2644 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 20151534441 in words is "twenty billion, one hundred fifty-one million, five hundred thirty-four thousand, four hundred forty-one".