136561473804 has 48 divisors (see below), whose sum is σ = 372632868608. Its totient is φ = 38110177728.

The previous prime is 136561473803. The next prime is 136561473817. The reversal of 136561473804 is 408374165631.

It is a happy number.

It is a super-2 number, since 2×136561473804² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136561473803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18900247 + ... + 18907470.

Almost surely, 2^136561473804 is an apocalyptic number.

136561473804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

136561473804 is an abundant number, since it is smaller than the sum of its proper divisors (236071394804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136561473804 is a wasteful number, since it uses less digits than its factorization.

136561473804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37807774 (or 37807772 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 136561473804 in words is "one hundred thirty-six billion, five hundred sixty-one million, four hundred seventy-three thousand, eight hundred four".