135512452553220 has 72 divisors (see below), whose sum is σ = 411544373647680. Its totient is φ = 36093582872640.

The previous prime is 135512452553183. The next prime is 135512452553243. The reversal of 135512452553220 is 22355254215531.

135512452553220 is a `hidden beast` number, since 1 + 3 + 5 + 5 + 1 + 24 + 52 + 553 + 2 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 448506286 + ... + 448808325.

It is an arithmetic number, because the mean of its divisors is an integer number (5715894078440).

Almost surely, 2^{135512452553220} is an apocalyptic number.

135512452553220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135512452553220 is an abundant number, since it is smaller than the sum of its proper divisors (276031921094460).

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

135512452553220 is a wasteful number, since it uses less digits than its factorization.

135512452553220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897315465 (or 897315460 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 45.

The spelling of 135512452553220 in words is "one hundred thirty-five trillion, five hundred twelve billion, four hundred fifty-two million, five hundred fifty-three thousand, two hundred twenty".