20061615654 has 32 divisors (see below), whose sum is σ = 44733558240. Its totient is φ = 6664376736.

The previous prime is 20061615649. The next prime is 20061615713. The reversal of 20061615654 is 45651616002.

20061615654 is a `hidden beast` number, since 20 + 0 + 616 + 15 + 6 + 5 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 618157 + ... + 649800.

It is an arithmetic number, because the mean of its divisors is an integer number (1397923695).

Almost surely, 2^20061615654 is an apocalyptic number.

20061615654 is an abundant number, since it is smaller than the sum of its proper divisors (24671942586).

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

20061615654 is a wasteful number, since it uses less digits than its factorization.

20061615654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268261 (or 1268255 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 20061615654 in words is "twenty billion, sixty-one million, six hundred fifteen thousand, six hundred fifty-four".