135471137720 has 32 divisors (see below), whose sum is σ = 320852696400. Its totient is φ = 51336430848.

The previous prime is 135471137717. The next prime is 135471137723. The reversal of 135471137720 is 27731174531.

It is an interprime number because it is at equal distance from previous prime (135471137717) and next prime (135471137723).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135471137723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89124989 + ... + 89126508.

Almost surely, 2^135471137720 is an apocalyptic number.

135471137720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135471137720 is an abundant number, since it is smaller than the sum of its proper divisors (185381558680).

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

135471137720 is a wasteful number, since it uses less digits than its factorization.

135471137720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178251527 (or 178251523 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 41.

The spelling of 135471137720 in words is "one hundred thirty-five billion, four hundred seventy-one million, one hundred thirty-seven thousand, seven hundred twenty".