136390643090 has 16 divisors (see below), whose sum is σ = 264388016088. Its totient is φ = 50359622016.

The previous prime is 136390643071. The next prime is 136390643101. The reversal of 136390643090 is 90346093631.

It can be written as a sum of positive squares in 4 ways, for example, as 124192103281 + 12198539809 = 352409^2 + 110447^2 .

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, 524579267 + ... + 524579526.

Almost surely, 2^136390643090 is an apocalyptic number.

136390643090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136390643090 is a deficient number, since it is larger than the sum of its proper divisors (127997372998).

136390643090 is a wasteful number, since it uses less digits than its factorization.

136390643090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049158813.

The product of its (nonzero) digits is 314928, while the sum is 44.

The spelling of 136390643090 in words is "one hundred thirty-six billion, three hundred ninety million, six hundred forty-three thousand, ninety".