136566044454 has 128 divisors (see below), whose sum is σ = 321629128704. Its totient is φ = 37854720000.

The previous prime is 136566044443. The next prime is 136566044479. The reversal of 136566044454 is 454440665631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 80474134 + ... + 80475830.

It is an arithmetic number, because the mean of its divisors is an integer number (2512727568).

Almost surely, 2^136566044454 is an apocalyptic number.

136566044454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 136566044454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160814564352).

136566044454 is an abundant number, since it is smaller than the sum of its proper divisors (185063084250).

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

136566044454 is a wasteful number, since it uses less digits than its factorization.

136566044454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2182.

The product of its (nonzero) digits is 4147200, while the sum is 48.

The spelling of 136566044454 in words is "one hundred thirty-six billion, five hundred sixty-six million, forty-four thousand, four hundred fifty-four".