2178025710551 has 2 divisors, whose sum is σ = 2178025710552. Its totient is φ = 2178025710550.

The previous prime is 2178025710547. The next prime is 2178025710557. The reversal of 2178025710551 is 1550175208712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2178025710551 - 2² = 2178025710547 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2178025710557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1089012855275 + 1089012855276.

It is an arithmetic number, because the mean of its divisors is an integer number (1089012855276).

Almost surely, 2^{2178025710551} is an apocalyptic number.

2178025710551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2178025710551 is an equidigital number, since it uses as much as digits as its factorization.

2178025710551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196000, while the sum is 44.

The spelling of 2178025710551 in words is "two trillion, one hundred seventy-eight billion, twenty-five million, seven hundred ten thousand, five hundred fifty-one".