2156202061487 has 2 divisors, whose sum is σ = 2156202061488. Its totient is φ = 2156202061486.

The previous prime is 2156202061483. The next prime is 2156202061547. The reversal of 2156202061487 is 7841602026512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2156202061487 - 2² = 2156202061483 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2156202061483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078101030743 + 1078101030744.

It is an arithmetic number, because the mean of its divisors is an integer number (1078101030744).

Almost surely, 2^{2156202061487} is an apocalyptic number.

2156202061487 is a deficient number, since it is larger than the sum of its proper divisors (1).

2156202061487 is an equidigital number, since it uses as much as digits as its factorization.

2156202061487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 44.

Adding to 2156202061487 its reverse (7841602026512), we get a palindrome (9997804087999).

The spelling of 2156202061487 in words is "two trillion, one hundred fifty-six billion, two hundred two million, sixty-one thousand, four hundred eighty-seven".