136530040973 has 4 divisors (see below), whose sum is σ = 138768238428. Its totient is φ = 134291843520.

The previous prime is 136530040967. The next prime is 136530040991. The reversal of 136530040973 is 379040035631.

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

It can be written as a sum of positive squares in 2 ways, for example, as 52900920004 + 83629120969 = 230002^2 + 289187^2 .

It is a cyclic number.

It is not a de Polignac number, because 136530040973 - 2¹⁶ = 136529975437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136530040973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136530040573) 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, 1119098636 + ... + 1119098757.

It is an arithmetic number, because the mean of its divisors is an integer number (34692059607).

Almost surely, 2^136530040973 is an apocalyptic number.

It is an amenable number.

136530040973 is a deficient number, since it is larger than the sum of its proper divisors (2238197455).

136530040973 is an equidigital number, since it uses as much as digits as its factorization.

136530040973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238197454.

The product of its (nonzero) digits is 204120, while the sum is 41.

The spelling of 136530040973 in words is "one hundred thirty-six billion, five hundred thirty million, forty thousand, nine hundred seventy-three".