20345105015254 has 16 divisors (see below), whose sum is σ = 30534439320000. Its totient is φ = 10166959957824.

The previous prime is 20345105015243. The next prime is 20345105015303. The reversal of 20345105015254 is 45251050154302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29441107 + ... + 30124225.

It is an arithmetic number, because the mean of its divisors is an integer number (1908402457500).

Almost surely, 2^{20345105015254} is an apocalyptic number.

20345105015254 is a deficient number, since it is larger than the sum of its proper divisors (10189334304746).

20345105015254 is a wasteful number, since it uses less digits than its factorization.

20345105015254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691287.

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 20345105015254 its reverse (45251050154302), we get a palindrome (65596155169556).

The spelling of 20345105015254 in words is "twenty trillion, three hundred forty-five billion, one hundred five million, fifteen thousand, two hundred fifty-four".