135276421251 has 4 divisors (see below), whose sum is σ = 180368561672. Its totient is φ = 90184280832.

The previous prime is 135276421243. The next prime is 135276421303. The reversal of 135276421251 is 152124672531.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 135276421251 - 2³ = 135276421243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135276421201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22546070206 + ... + 22546070211.

It is an arithmetic number, because the mean of its divisors is an integer number (45092140418).

Almost surely, 2^135276421251 is an apocalyptic number.

135276421251 is a deficient number, since it is larger than the sum of its proper divisors (45092140421).

135276421251 is an equidigital number, since it uses as much as digits as its factorization.

135276421251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45092140420.

The product of its digits is 100800, while the sum is 39.

The spelling of 135276421251 in words is "one hundred thirty-five billion, two hundred seventy-six million, four hundred twenty-one thousand, two hundred fifty-one".