20002153434 has 8 divisors (see below), whose sum is σ = 40004306880. Its totient is φ = 6667384476.

The previous prime is 20002153421. The next prime is 20002153453. The reversal of 20002153434 is 43435120002.

It is a sphenic number, since it is the product of 3 distinct primes.

20002153434 is an admirable number.

It is a super-2 number, since 2×20002153434² (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 3 ways as a sum of consecutive naturals, for example, 1666846114 + ... + 1666846125.

It is an arithmetic number, because the mean of its divisors is an integer number (5000538360).

Almost surely, 2^20002153434 is an apocalyptic number.

20002153434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20002153434 is a wasteful number, since it uses less digits than its factorization.

20002153434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333692244.

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 20002153434 its reverse (43435120002), we get a palindrome (63437273436).

The spelling of 20002153434 in words is "twenty billion, two million, one hundred fifty-three thousand, four hundred thirty-four".