135947772473 has 4 divisors (see below), whose sum is σ = 136033653888. Its totient is φ = 135861891060.

The previous prime is 135947772439. The next prime is 135947772517. The reversal of 135947772473 is 374277749531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 135947772473 - 2²⁴ = 135930995257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135947777473) 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, 42938333 + ... + 42941498.

It is an arithmetic number, because the mean of its divisors is an integer number (34008413472).

Almost surely, 2^135947772473 is an apocalyptic number.

It is an amenable number.

135947772473 is a deficient number, since it is larger than the sum of its proper divisors (85881415).

135947772473 is an equidigital number, since it uses as much as digits as its factorization.

135947772473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85881414.

The product of its digits is 31116960, while the sum is 59.

The spelling of 135947772473 in words is "one hundred thirty-five billion, nine hundred forty-seven million, seven hundred seventy-two thousand, four hundred seventy-three".