1540354343020 has 48 divisors (see below), whose sum is σ = 3392854174080. Its totient is φ = 586734153984.

The previous prime is 1540354342931. The next prime is 1540354343069. The reversal of 1540354343020 is 203434530451.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22109475 + ... + 22179034.

It is an arithmetic number, because the mean of its divisors is an integer number (70684461960).

Almost surely, 2^{1540354343020} is an apocalyptic number.

1540354343020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1540354343020 is an abundant number, since it is smaller than the sum of its proper divisors (1852499831060).

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

1540354343020 is a wasteful number, since it uses less digits than its factorization.

1540354343020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44288602 (or 44288600 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 1540354343020 its reverse (203434530451), we get a palindrome (1743788873471).

The spelling of 1540354343020 in words is "one trillion, five hundred forty billion, three hundred fifty-four million, three hundred forty-three thousand, twenty".