20117754154 has 16 divisors (see below), whose sum is σ = 31767720480. Its totient is φ = 9528608880.

The previous prime is 20117754131. The next prime is 20117754157. The reversal of 20117754154 is 45145771102.

It is not an unprimeable number, because it can be changed into a prime (20117754157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668557 + ... + 697999.

It is an arithmetic number, because the mean of its divisors is an integer number (1985482530).

Almost surely, 2^20117754154 is an apocalyptic number.

20117754154 is a deficient number, since it is larger than the sum of its proper divisors (11649966326).

20117754154 is a wasteful number, since it uses less digits than its factorization.

20117754154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47445.

The product of its (nonzero) digits is 39200, while the sum is 37.

The spelling of 20117754154 in words is "twenty billion, one hundred seventeen million, seven hundred fifty-four thousand, one hundred fifty-four".