23420500004155 has 16 divisors (see below), whose sum is σ = 28388445974784. Its totient is φ = 18547242332800.

The previous prime is 23420500004137. The next prime is 23420500004173. The reversal of 23420500004155 is 55140000502432.

It is an interprime number because it is at equal distance from previous prime (23420500004137) and next prime (23420500004173).

It is a de Polignac number, because none of the positive numbers 2^k-23420500004155 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1989472 + ... + 7127341.

It is an arithmetic number, because the mean of its divisors is an integer number (1774277873424).

Almost surely, 2^{23420500004155} is an apocalyptic number.

23420500004155 is a deficient number, since it is larger than the sum of its proper divisors (4967945970629).

23420500004155 is a wasteful number, since it uses less digits than its factorization.

23420500004155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9122006.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 23420500004155 its reverse (55140000502432), we get a palindrome (78560500506587).

The spelling of 23420500004155 in words is "twenty-three trillion, four hundred twenty billion, five hundred million, four thousand, one hundred fifty-five".