20034036235551 has 8 divisors (see below), whose sum is σ = 28766821261360. Its totient is φ = 12328637683392.

The previous prime is 20034036235547. The next prime is 20034036235559. The reversal of 20034036235551 is 15553263043002.

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

It is not a de Polignac number, because 20034036235551 - 2² = 20034036235547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 513693236809 = 20034036235551 / (2 + 0 + 0 + 3 + 4 + 0 + 3 + 6 + 2 + 3 + 5 + 5 + 5 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20034036235559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256846618366 + ... + 256846618443.

It is an arithmetic number, because the mean of its divisors is an integer number (3595852657670).

Almost surely, 2^{20034036235551} is an apocalyptic number.

20034036235551 is a deficient number, since it is larger than the sum of its proper divisors (8732785025809).

20034036235551 is a wasteful number, since it uses less digits than its factorization.

20034036235551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513693236825.

The product of its (nonzero) digits is 324000, while the sum is 39.

Adding to 20034036235551 its reverse (15553263043002), we get a palindrome (35587299278553).

The spelling of 20034036235551 in words is "twenty trillion, thirty-four billion, thirty-six million, two hundred thirty-five thousand, five hundred fifty-one".