20345425653015 has 32 divisors (see below), whose sum is σ = 38297271821760. Its totient is φ = 10212605816832.

The previous prime is 20345425653011. The next prime is 20345425653019. The reversal of 20345425653015 is 51035652454302.

20345425653015 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 5 + 42 + 565 + 30 + 15 = 666.

It is an interprime number because it is at equal distance from previous prime (20345425653011) and next prime (20345425653019).

It is not a de Polignac number, because 20345425653015 - 2² = 20345425653011 is a prime.

It is a super-3 number, since 3×20345425653015³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345425653011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4432552314 + ... + 4432556903.

It is an arithmetic number, because the mean of its divisors is an integer number (1196789744430).

Almost surely, 2^{20345425653015} is an apocalyptic number.

20345425653015 is a deficient number, since it is larger than the sum of its proper divisors (17951846168745).

20345425653015 is a wasteful number, since it uses less digits than its factorization.

20345425653015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8865109248 (or 8865109242 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 45.

It can be divided in two parts, 20345425 and 653015, that added together give a triangular number (20998440 = T₆₄₈₀).

The spelling of 20345425653015 in words is "twenty trillion, three hundred forty-five billion, four hundred twenty-five million, six hundred fifty-three thousand, fifteen".