2151511014123 has 48 divisors (see below), whose sum is σ = 3313423058400. Its totient is φ = 1340603550720.

The previous prime is 2151511014077. The next prime is 2151511014139. The reversal of 2151511014123 is 3214101151512.

2151511014123 is a `hidden beast` number, since 2 + 1 + 5 + 1 + 511 + 0 + 141 + 2 + 3 = 666.

It is not a de Polignac number, because 2151511014123 - 2¹⁸ = 2151510751979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2151511014823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19579548 + ... + 19689126.

It is an arithmetic number, because the mean of its divisors is an integer number (69029647050).

Almost surely, 2^{2151511014123} is an apocalyptic number.

2151511014123 is a deficient number, since it is larger than the sum of its proper divisors (1161912044277).

2151511014123 is a wasteful number, since it uses less digits than its factorization.

2151511014123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110492 (or 110489 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

Adding to 2151511014123 its reverse (3214101151512), we get a palindrome (5365612165635).

The spelling of 2151511014123 in words is "two trillion, one hundred fifty-one billion, five hundred eleven million, fourteen thousand, one hundred twenty-three".