20154030155 has 16 divisors (see below), whose sum is σ = 28531421184. Its totient is φ = 13374102240.

The previous prime is 20154030101. The next prime is 20154030161. The reversal of 20154030155 is 55103045102.

It is not a de Polignac number, because 20154030155 - 2¹⁴ = 20154013771 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9286487 + ... + 9288656.

It is an arithmetic number, because the mean of its divisors is an integer number (1783213824).

Almost surely, 2^20154030155 is an apocalyptic number.

20154030155 is a deficient number, since it is larger than the sum of its proper divisors (8377391029).

20154030155 is a wasteful number, since it uses less digits than its factorization.

20154030155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18575186.

The product of its (nonzero) digits is 3000, while the sum is 26.

Adding to 20154030155 its reverse (55103045102), we get a palindrome (75257075257).

The spelling of 20154030155 in words is "twenty billion, one hundred fifty-four million, thirty thousand, one hundred fifty-five".