20148288155 has 8 divisors (see below), whose sum is σ = 24391910592. Its totient is φ = 15975987328.

The previous prime is 20148288143. The next prime is 20148288203. The reversal of 20148288155 is 55188284102.

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

It is a cyclic number.

It is not a de Polignac number, because 20148288155 - 2¹⁸ = 20148026011 is a prime.

It is a super-4 number, since 4×20148288155⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian 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, 17829779 + ... + 17830908.

It is an arithmetic number, because the mean of its divisors is an integer number (3048988824).

Almost surely, 2^20148288155 is an apocalyptic number.

20148288155 is a deficient number, since it is larger than the sum of its proper divisors (4243622437).

20148288155 is a wasteful number, since it uses less digits than its factorization.

20148288155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35660805.

The product of its (nonzero) digits is 204800, while the sum is 44.

The spelling of 20148288155 in words is "twenty billion, one hundred forty-eight million, two hundred eighty-eight thousand, one hundred fifty-five".