1642301221552 has 20 divisors (see below), whose sum is σ = 3255957655720. Its totient is φ = 802054084608.

The previous prime is 1642301221541. The next prime is 1642301221559. The reversal of 1642301221552 is 2551221032461.

It is a happy number.

It is a super-2 number, since 2×1642301221552² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1642301221559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1193532177 + ... + 1193533552.

It is an arithmetic number, because the mean of its divisors is an integer number (162797882786).

Almost surely, 2^{1642301221552} is an apocalyptic number.

It is an amenable number.

1642301221552 is a deficient number, since it is larger than the sum of its proper divisors (1613656434168).

1642301221552 is a wasteful number, since it uses less digits than its factorization.

1642301221552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2387065780 (or 2387065774 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 1642301221552 in words is "one trillion, six hundred forty-two billion, three hundred one million, two hundred twenty-one thousand, five hundred fifty-two".