2154734154851 has 2 divisors, whose sum is σ = 2154734154852. Its totient is φ = 2154734154850.

The previous prime is 2154734154841. The next prime is 2154734154899. The reversal of 2154734154851 is 1584514374512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2154734154851 - 2¹⁴ = 2154734138467 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2154734154851.

It is not a weakly prime, because it can be changed into another prime (2154734154841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077367077425 + 1077367077426.

It is an arithmetic number, because the mean of its divisors is an integer number (1077367077426).

Almost surely, 2^{2154734154851} is an apocalyptic number.

2154734154851 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154734154851 is an equidigital number, since it uses as much as digits as its factorization.

2154734154851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688000, while the sum is 50.

The spelling of 2154734154851 in words is "two trillion, one hundred fifty-four billion, seven hundred thirty-four million, one hundred fifty-four thousand, eight hundred fifty-one".