20315111413278 has 32 divisors (see below), whose sum is σ = 44416413711360. Its totient is φ = 6143242386560.

The previous prime is 20315111413277. The next prime is 20315111413307. The reversal of 20315111413278 is 87231411151302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315111413277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321267675 + ... + 321330902.

It is an arithmetic number, because the mean of its divisors is an integer number (1388012928480).

Almost surely, 2^{20315111413278} is an apocalyptic number.

20315111413278 is an abundant number, since it is smaller than the sum of its proper divisors (24101302298082).

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

20315111413278 is a wasteful number, since it uses less digits than its factorization.

20315111413278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642599072.

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 20315111413278 in words is "twenty trillion, three hundred fifteen billion, one hundred eleven million, four hundred thirteen thousand, two hundred seventy-eight".