20612254744151 has 4 divisors (see below), whose sum is σ = 23556862564752. Its totient is φ = 17667646923552.

The previous prime is 20612254744121. The next prime is 20612254744153. The reversal of 20612254744151 is 15144745221602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20612254744151 - 2⁶ = 20612254744087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20612254744153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1472303910290 + ... + 1472303910303.

It is an arithmetic number, because the mean of its divisors is an integer number (5889215641188).

Almost surely, 2^{20612254744151} is an apocalyptic number.

20612254744151 is a deficient number, since it is larger than the sum of its proper divisors (2944607820601).

20612254744151 is an equidigital number, since it uses as much as digits as its factorization.

20612254744151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2944607820600.

The product of its (nonzero) digits is 537600, while the sum is 44.

Adding to 20612254744151 its reverse (15144745221602), we get a palindrome (35756999965753).

The spelling of 20612254744151 in words is "twenty trillion, six hundred twelve billion, two hundred fifty-four million, seven hundred forty-four thousand, one hundred fifty-one".