136985346537958 has 4 divisors (see below), whose sum is σ = 205478019806940. Its totient is φ = 68492673268978.

The previous prime is 136985346537911. The next prime is 136985346537983. The reversal of 136985346537958 is 859735643589631.

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

It is a super-2 number, since 2×136985346537958² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34246336634488 + ... + 34246336634491.

It is an arithmetic number, because the mean of its divisors is an integer number (51369504951735).

Almost surely, 2^{136985346537958} is an apocalyptic number.

136985346537958 is a deficient number, since it is larger than the sum of its proper divisors (68492673268982).

136985346537958 is an equidigital number, since it uses as much as digits as its factorization.

136985346537958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68492673268981.

The product of its digits is 17635968000, while the sum is 82.

The spelling of 136985346537958 in words is "one hundred thirty-six trillion, nine hundred eighty-five billion, three hundred forty-six million, five hundred thirty-seven thousand, nine hundred fifty-eight".