2642880952421 has 2 divisors, whose sum is σ = 2642880952422. Its totient is φ = 2642880952420.

The previous prime is 2642880952381. The next prime is 2642880952457. The reversal of 2642880952421 is 1242590882462.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1548566203396 + 1094314749025 = 1244414^2 + 1046095^2 .

It is a cyclic number.

It is not a de Polignac number, because 2642880952421 - 2⁶ = 2642880952357 is a prime.

It is a super-2 number, since 2×2642880952421² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2642880952471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321440476210 + 1321440476211.

It is an arithmetic number, because the mean of its divisors is an integer number (1321440476211).

Almost surely, 2^{2642880952421} is an apocalyptic number.

It is an amenable number.

2642880952421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642880952421 is an equidigital number, since it uses as much as digits as its factorization.

2642880952421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4423680, while the sum is 53.

The spelling of 2642880952421 in words is "two trillion, six hundred forty-two billion, eight hundred eighty million, nine hundred fifty-two thousand, four hundred twenty-one".