136620526554 has 96 divisors (see below), whose sum is σ = 324835963200. Its totient is φ = 42552311040.

The previous prime is 136620526501. The next prime is 136620526597. The reversal of 136620526554 is 455625026631.

136620526554 is a `hidden beast` number, since 1 + 36 + 62 + 0 + 5 + 2 + 6 + 554 = 666.

It is a super-2 number, since 2×136620526554² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2137744 + ... + 2200724.

It is an arithmetic number, because the mean of its divisors is an integer number (3383707950).

Almost surely, 2^136620526554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136620526554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162417981600).

136620526554 is an abundant number, since it is smaller than the sum of its proper divisors (188215436646).

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

136620526554 is a wasteful number, since it uses less digits than its factorization.

136620526554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63165 (or 63142 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

It can be divided in two parts, 13662052 and 6554, that added together give a triangular number (13668606 = T₅₂₂₈).

The spelling of 136620526554 in words is "one hundred thirty-six billion, six hundred twenty million, five hundred twenty-six thousand, five hundred fifty-four".