136661037530 has 16 divisors (see below), whose sum is σ = 254472277320. Its totient is φ = 52779435072.

The previous prime is 136661037493. The next prime is 136661037581. The reversal of 136661037530 is 35730166631.

It can be written as a sum of positive squares in 4 ways, for example, as 135189317761 + 1471719769 = 367681^2 + 38363^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235622189 + ... + 235622768.

Almost surely, 2^136661037530 is an apocalyptic number.

136661037530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136661037530 is a deficient number, since it is larger than the sum of its proper divisors (117811239790).

136661037530 is a wasteful number, since it uses less digits than its factorization.

136661037530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471244993.

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

The spelling of 136661037530 in words is "one hundred thirty-six billion, six hundred sixty-one million, thirty-seven thousand, five hundred thirty".