20514056340 has 24 divisors (see below), whose sum is σ = 57439357920. Its totient is φ = 5470415008.

The previous prime is 20514056333. The next prime is 20514056347. The reversal of 20514056340 is 4365041502.

It is an interprime number because it is at equal distance from previous prime (20514056333) and next prime (20514056347).

It is a super-3 number, since 3×20514056340³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 20514056298 and 20514056307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20514056347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170950410 + ... + 170950529.

It is an arithmetic number, because the mean of its divisors is an integer number (2393306580).

Almost surely, 2^20514056340 is an apocalyptic number.

20514056340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20514056340 is an abundant number, since it is smaller than the sum of its proper divisors (36925301580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20514056340 is a wasteful number, since it uses less digits than its factorization.

20514056340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341900951 (or 341900949 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 20514056340 its reverse (4365041502), we get a palindrome (24879097842).

The spelling of 20514056340 in words is "twenty billion, five hundred fourteen million, fifty-six thousand, three hundred forty".