1623005621652 has 24 divisors (see below), whose sum is σ = 3986329597600. Its totient is φ = 512528090976.

The previous prime is 1623005621651. The next prime is 1623005621659. The reversal of 1623005621652 is 2561265003261.

It is a self number, because there is not a number n which added to its sum of digits gives 1623005621652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623005621651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3559222627 + ... + 3559223082.

Almost surely, 2^{1623005621652} is an apocalyptic number.

1623005621652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1623005621652 is an abundant number, since it is smaller than the sum of its proper divisors (2363323975948).

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

1623005621652 is a wasteful number, since it uses less digits than its factorization.

1623005621652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7118445735 (or 7118445733 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 1623005621652 in words is "one trillion, six hundred twenty-three billion, five million, six hundred twenty-one thousand, six hundred fifty-two".