135280271973 has 48 divisors (see below), whose sum is σ = 233767517184. Its totient is φ = 68780204640.

The previous prime is 135280271957. The next prime is 135280271999. The reversal of 135280271973 is 379172082531.

It is not a de Polignac number, because 135280271973 - 2⁴ = 135280271957 is a prime.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135280271923) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 814015 + ... + 966012.

It is an arithmetic number, because the mean of its divisors is an integer number (4870156608).

Almost surely, 2^135280271973 is an apocalyptic number.

It is an amenable number.

135280271973 is a deficient number, since it is larger than the sum of its proper divisors (98487245211).

135280271973 is a wasteful number, since it uses less digits than its factorization.

135280271973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780102 (or 1780095 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 48.

It can be divided in two parts, 135280 and 271973, that added together give a triangular number (407253 = T₉₀₂).

The spelling of 135280271973 in words is "one hundred thirty-five billion, two hundred eighty million, two hundred seventy-one thousand, nine hundred seventy-three".