1453640664556 has 6 divisors (see below), whose sum is σ = 2543871162980. Its totient is φ = 726820332276.

The previous prime is 1453640664523. The next prime is 1453640664559. The reversal of 1453640664556 is 6554660463541.

It is a super-2 number, since 2×1453640664556² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1453640664497 and 1453640664506.

It is not an unprimeable number, because it can be changed into a prime (1453640664559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181705083066 + ... + 181705083073.

Almost surely, 2^{1453640664556} is an apocalyptic number.

It is an amenable number.

1453640664556 is a deficient number, since it is larger than the sum of its proper divisors (1090230498424).

1453640664556 is a wasteful number, since it uses less digits than its factorization.

1453640664556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363410166143 (or 363410166141 counting only the distinct ones).

The product of its (nonzero) digits is 31104000, while the sum is 55.

The spelling of 1453640664556 in words is "one trillion, four hundred fifty-three billion, six hundred forty million, six hundred sixty-four thousand, five hundred fifty-six".