136541997373 has 4 divisors (see below), whose sum is σ = 141250342140. Its totient is φ = 131833652608.

The previous prime is 136541997311. The next prime is 136541997421. The reversal of 136541997373 is 373799145631.

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 95974800804 + 40567196569 = 309798^2 + 201413^2 .

It is a cyclic number.

It is not a de Polignac number, because 136541997373 - 2⁹ = 136541996861 is a prime.

It is a super-2 number, since 2×136541997373² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136541497373) 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, 2354172340 + ... + 2354172397.

It is an arithmetic number, because the mean of its divisors is an integer number (35312585535).

Almost surely, 2^136541997373 is an apocalyptic number.

It is an amenable number.

136541997373 is a deficient number, since it is larger than the sum of its proper divisors (4708344767).

136541997373 is an equidigital number, since it uses as much as digits as its factorization.

136541997373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4708344766.

The product of its digits is 12859560, while the sum is 58.

The spelling of 136541997373 in words is "one hundred thirty-six billion, five hundred forty-one million, nine hundred ninety-seven thousand, three hundred seventy-three".