20152343340 has 36 divisors (see below), whose sum is σ = 61128775344. Its totient is φ = 5373958176.

The previous prime is 20152343333. The next prime is 20152343359. The reversal of 20152343340 is 4334325102.

20152343340 is a `hidden beast` number, since 201 + 5 + 23 + 433 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×20152343340² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55978552 + ... + 55978911.

Almost surely, 2^20152343340 is an apocalyptic number.

20152343340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20152343340 is an abundant number, since it is smaller than the sum of its proper divisors (40976432004).

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

20152343340 is a wasteful number, since it uses less digits than its factorization.

20152343340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111957478 (or 111957473 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 20152343340 its reverse (4334325102), we get a palindrome (24486668442).

The spelling of 20152343340 in words is "twenty billion, one hundred fifty-two million, three hundred forty-three thousand, three hundred forty".