135331420440 has 64 divisors (see below), whose sum is σ = 406198080000. Its totient is φ = 36070261632.

The previous prime is 135331420369. The next prime is 135331420457. The reversal of 135331420440 is 44024133531.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 135331420398 and 135331420407.

It is a congruent 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, 42202 + ... + 521961.

It is an arithmetic number, because the mean of its divisors is an integer number (6346845000).

Almost surely, 2^135331420440 is an apocalyptic number.

135331420440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135331420440 is an abundant number, since it is smaller than the sum of its proper divisors (270866659560).

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

135331420440 is a wasteful number, since it uses less digits than its factorization.

135331420440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566176 (or 566172 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 135331420440 its reverse (44024133531), we get a palindrome (179355553971).

The spelling of 135331420440 in words is "one hundred thirty-five billion, three hundred thirty-one million, four hundred twenty thousand, four hundred forty".