20401154513 has 4 divisors (see below), whose sum is σ = 20404113408. Its totient is φ = 20398195620.

The previous prime is 20401154509. The next prime is 20401154531. The reversal of 20401154513 is 31545110402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20401154513 - 2² = 20401154509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20401154503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1469081 + ... + 1482902.

It is an arithmetic number, because the mean of its divisors is an integer number (5101028352).

Almost surely, 2^20401154513 is an apocalyptic number.

It is an amenable number.

20401154513 is a deficient number, since it is larger than the sum of its proper divisors (2958895).

20401154513 is an equidigital number, since it uses as much as digits as its factorization.

20401154513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2958894.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 20401154513 its reverse (31545110402), we get a palindrome (51946264915).

The spelling of 20401154513 in words is "twenty billion, four hundred one million, one hundred fifty-four thousand, five hundred thirteen".