20145717360078 has 64 divisors (see below), whose sum is σ = 42665729605632. Its totient is φ = 6328590824160.

The previous prime is 20145717360073. The next prime is 20145717360089. The reversal of 20145717360078 is 87006371754102.

It is a self number, because there is not a number n which added to its sum of digits gives 20145717360078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20145717360073) 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, 1807383 + ... + 6599853.

It is an arithmetic number, because the mean of its divisors is an integer number (666652025088).

Almost surely, 2^{20145717360078} is an apocalyptic number.

20145717360078 is an abundant number, since it is smaller than the sum of its proper divisors (22520012245554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20145717360078 is a wasteful number, since it uses less digits than its factorization.

20145717360078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4792949.

The product of its (nonzero) digits is 1975680, while the sum is 51.

The spelling of 20145717360078 in words is "twenty trillion, one hundred forty-five billion, seven hundred seventeen million, three hundred sixty thousand, seventy-eight".