16311373431540 has 192 divisors, whose sum is σ = 50063582822400. Its totient is φ = 3935289922560.

The previous prime is 16311373431503. The next prime is 16311373431541. The reversal of 16311373431540 is 4513437311361.

It is a junction number, because it is equal to n+sod(n) for n = 16311373431492 and 16311373431501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16311373431541) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 115449861 + ... + 115591059.

It is an arithmetic number, because the mean of its divisors is an integer number (260747827200).

Almost surely, 2^{16311373431540} is an apocalyptic number.

16311373431540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16311373431540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25031791411200).

16311373431540 is an abundant number, since it is smaller than the sum of its proper divisors (33752209390860).

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

16311373431540 is a wasteful number, since it uses less digits than its factorization.

16311373431540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142062 (or 142060 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 42.

The spelling of 16311373431540 in words is "sixteen trillion, three hundred eleven billion, three hundred seventy-three million, four hundred thirty-one thousand, five hundred forty".