1540131373000 has 128 divisors (see below), whose sum is σ = 3932354874240. Its totient is φ = 559931040000.

The previous prime is 1540131372979. The next prime is 1540131373009. The reversal of 1540131373000 is 3731310451.

It is a self number, because there is not a number n which added to its sum of digits gives 1540131373000.

It is not an unprimeable number, because it can be changed into a prime (1540131373009) 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, 66571435 + ... + 66594565.

It is an arithmetic number, because the mean of its divisors is an integer number (30721522455).

Almost surely, 2^{1540131373000} is an apocalyptic number.

1540131373000 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 1540131373000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1966177437120).

1540131373000 is an abundant number, since it is smaller than the sum of its proper divisors (2392223501240).

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

1540131373000 is a wasteful number, since it uses less digits than its factorization.

1540131373000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29216 (or 29202 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

Adding to 1540131373000 its reverse (3731310451), we get a palindrome (1543862683451).

The spelling of 1540131373000 in words is "one trillion, five hundred forty billion, one hundred thirty-one million, three hundred seventy-three thousand".