136742897571 has 48 divisors (see below), whose sum is σ = 223968412800. Its totient is φ = 73789252992.

The previous prime is 136742897491. The next prime is 136742897623. The reversal of 136742897571 is 175798247631.

It is not a de Polignac number, because 136742897571 - 2²¹ = 136740800419 is a prime.

It is a super-2 number, since 2×136742897571² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (136742897971) 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, 796000 + ... + 952418.

It is an arithmetic number, because the mean of its divisors is an integer number (4666008600).

Almost surely, 2^136742897571 is an apocalyptic number.

136742897571 is a deficient number, since it is larger than the sum of its proper divisors (87225515229).

136742897571 is a wasteful number, since it uses less digits than its factorization.

136742897571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156768 (or 156761 counting only the distinct ones).

The product of its digits is 17781120, while the sum is 60.

The spelling of 136742897571 in words is "one hundred thirty-six billion, seven hundred forty-two million, eight hundred ninety-seven thousand, five hundred seventy-one".