1540434552240 has 40 divisors (see below), whose sum is σ = 4775347112688. Its totient is φ = 410782547200.

The previous prime is 1540434552197. The next prime is 1540434552259. The reversal of 1540434552240 is 422554340451.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3209238411 + ... + 3209238890.

Almost surely, 2^{1540434552240} is an apocalyptic number.

1540434552240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1540434552240 is an abundant number, since it is smaller than the sum of its proper divisors (3234912560448).

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

1540434552240 is a wasteful number, since it uses less digits than its factorization.

1540434552240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6418477317 (or 6418477311 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 39.

Adding to 1540434552240 its reverse (422554340451), we get a palindrome (1962988892691).

The spelling of 1540434552240 in words is "one trillion, five hundred forty billion, four hundred thirty-four million, five hundred fifty-two thousand, two hundred forty".