20416615155 has 12 divisors (see below), whose sum is σ = 35388799680. Its totient is φ = 10888861392.

The previous prime is 20416615151. The next prime is 20416615157. The reversal of 20416615155 is 55151661402.

20416615155 is a `hidden beast` number, since 20 + 4 + 1 + 6 + 615 + 15 + 5 = 666.

It is not a de Polignac number, because 20416615155 - 2² = 20416615151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20416615151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 226851235 + ... + 226851324.

It is an arithmetic number, because the mean of its divisors is an integer number (2949066640).

Almost surely, 2^20416615155 is an apocalyptic number.

20416615155 is a deficient number, since it is larger than the sum of its proper divisors (14972184525).

20416615155 is a wasteful number, since it uses less digits than its factorization.

20416615155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453702570 (or 453702567 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The spelling of 20416615155 in words is "twenty billion, four hundred sixteen million, six hundred fifteen thousand, one hundred fifty-five".