136503187856 has 30 divisors (see below), whose sum is σ = 307654508070. Its totient is φ = 58501365888.

The previous prime is 136503187841. The next prime is 136503187861. The reversal of 136503187856 is 658781305631.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 74193043456 + 62310144400 = 272384^2 + 249620^2 .

It is a junction number, because it is equal to n+sod(n) for n = 136503187798 and 136503187807.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 87054821 + ... + 87056388.

It is an arithmetic number, because the mean of its divisors is an integer number (10255150269).

Almost surely, 2^136503187856 is an apocalyptic number.

136503187856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

136503187856 is an abundant number, since it is smaller than the sum of its proper divisors (171151320214).

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

136503187856 is a wasteful number, since it uses less digits than its factorization.

136503187856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174111231 (or 174111218 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 136503187856 in words is "one hundred thirty-six billion, five hundred three million, one hundred eighty-seven thousand, eight hundred fifty-six".