20616354118 has 16 divisors (see below), whose sum is σ = 31256340624. Its totient is φ = 10197741600.

The previous prime is 20616354107. The next prime is 20616354131. The reversal of 20616354118 is 81145361602.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208621 + ... + 291127.

It is an arithmetic number, because the mean of its divisors is an integer number (1953521289).

Almost surely, 2^20616354118 is an apocalyptic number.

20616354118 is a deficient number, since it is larger than the sum of its proper divisors (10639986506).

20616354118 is a wasteful number, since it uses less digits than its factorization.

20616354118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83847.

The product of its (nonzero) digits is 34560, while the sum is 37.

It can be divided in two parts, 206163 and 54118, that added together give a triangular number (260281 = T₇₂₁).

The spelling of 20616354118 in words is "twenty billion, six hundred sixteen million, three hundred fifty-four thousand, one hundred eighteen".