20151012151 has 4 divisors (see below), whose sum is σ = 20154131712. Its totient is φ = 20147892592.

The previous prime is 20151012047. The next prime is 20151012269. The reversal of 20151012151 is 15121015102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20151012151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20151012451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1550071 + ... + 1563016.

It is an arithmetic number, because the mean of its divisors is an integer number (5038532928).

Almost surely, 2^20151012151 is an apocalyptic number.

20151012151 is a deficient number, since it is larger than the sum of its proper divisors (3119561).

20151012151 is an equidigital number, since it uses as much as digits as its factorization.

20151012151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3119560.

The product of its (nonzero) digits is 100, while the sum is 19.

Adding to 20151012151 its reverse (15121015102), we get a palindrome (35272027253).

The spelling of 20151012151 in words is "twenty billion, one hundred fifty-one million, twelve thousand, one hundred fifty-one".