20115511054 has 8 divisors (see below), whose sum is σ = 30353945328. Its totient is φ = 9997529280.

The previous prime is 20115510991. The next prime is 20115511099. The reversal of 20115511054 is 45011551102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30112707 + ... + 30113374.

It is an arithmetic number, because the mean of its divisors is an integer number (3794243166).

Almost surely, 2^20115511054 is an apocalyptic number.

20115511054 is a deficient number, since it is larger than the sum of its proper divisors (10238434274).

20115511054 is a wasteful number, since it uses less digits than its factorization.

20115511054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60226250.

The product of its (nonzero) digits is 1000, while the sum is 25.

The spelling of 20115511054 in words is "twenty billion, one hundred fifteen million, five hundred eleven thousand, fifty-four".