20511139341 has 32 divisors (see below), whose sum is σ = 35578902528. Its totient is φ = 10191867840.

The previous prime is 20511139289. The next prime is 20511139379. The reversal of 20511139341 is 14393111502.

It is not a de Polignac number, because 20511139341 - 2⁷ = 20511139213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20511139299 and 20511139308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20511139381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1924966 + ... + 1935591.

It is an arithmetic number, because the mean of its divisors is an integer number (1111840704).

Almost surely, 2^20511139341 is an apocalyptic number.

20511139341 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20511139341 is a deficient number, since it is larger than the sum of its proper divisors (15067763187).

20511139341 is a wasteful number, since it uses less digits than its factorization.

20511139341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3860601.

The product of its (nonzero) digits is 3240, while the sum is 30.

The spelling of 20511139341 in words is "twenty billion, five hundred eleven million, one hundred thirty-nine thousand, three hundred forty-one".