2661422898528 has 96 divisors (see below), whose sum is σ = 7784854600320. Its totient is φ = 884584264320.

The previous prime is 2661422898527. The next prime is 2661422898529. The reversal of 2661422898528 is 8258982241662.

2661422898528 is a `hidden beast` number, since 2 + 6 + 6 + 1 + 4 + 22 + 89 + 8 + 528 = 666.

It is an interprime number because it is at equal distance from previous prime (2661422898527) and next prime (2661422898529).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661422898523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4138738 + ... + 4738353.

It is an arithmetic number, because the mean of its divisors is an integer number (81092235420).

Almost surely, 2^{2661422898528} is an apocalyptic number.

It is an amenable number.

2661422898528 is an abundant number, since it is smaller than the sum of its proper divisors (5123431701792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2661422898528 is a wasteful number, since it uses less digits than its factorization.

2661422898528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8877457 (or 8877443 counting only the distinct ones).

The product of its digits is 53084160, while the sum is 63.

The spelling of 2661422898528 in words is "two trillion, six hundred sixty-one billion, four hundred twenty-two million, eight hundred ninety-eight thousand, five hundred twenty-eight".