2121641653532 has 12 divisors (see below), whose sum is σ = 3874302150096. Its totient is φ = 1014698182080.

The previous prime is 2121641653529. The next prime is 2121641653541. The reversal of 2121641653532 is 2353561461212.

It is a self number, because there is not a number n which added to its sum of digits gives 2121641653532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11530661069 + ... + 11530661252.

It is an arithmetic number, because the mean of its divisors is an integer number (322858512508).

Almost surely, 2^{2121641653532} is an apocalyptic number.

It is an amenable number.

2121641653532 is a deficient number, since it is larger than the sum of its proper divisors (1752660496564).

2121641653532 is a wasteful number, since it uses less digits than its factorization.

2121641653532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23061322348 (or 23061322346 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The spelling of 2121641653532 in words is "two trillion, one hundred twenty-one billion, six hundred forty-one million, six hundred fifty-three thousand, five hundred thirty-two".