135345400240 has 40 divisors (see below), whose sum is σ = 315097207488. Its totient is φ = 54066048000.

The previous prime is 135345400219. The next prime is 135345400297. The reversal of 135345400240 is 42004543531.

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

It is a super-2 number, since 2×135345400240² (a number of 23 digits) contains 22 as substring.

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, 1066297 + ... + 1186456.

Almost surely, 2^135345400240 is an apocalyptic number.

135345400240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135345400240 is an abundant number, since it is smaller than the sum of its proper divisors (179751807248).

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

135345400240 is a wasteful number, since it uses less digits than its factorization.

135345400240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2253517 (or 2253511 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 135345400240 its reverse (42004543531), we get a palindrome (177349943771).

The spelling of 135345400240 in words is "one hundred thirty-five billion, three hundred forty-five million, four hundred thousand, two hundred forty".