1623640588550 has 24 divisors (see below), whose sum is σ = 3021491544456. Its totient is φ = 649129343040.

The previous prime is 1623640588547. The next prime is 1623640588571. The reversal of 1623640588550 is 558850463261.

It is a super-2 number, since 2×1623640588550² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1623640588492 and 1623640588501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8071967 + ... + 8270666.

It is an arithmetic number, because the mean of its divisors is an integer number (125895481019).

Almost surely, 2^{1623640588550} is an apocalyptic number.

1623640588550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1623640588550 is a deficient number, since it is larger than the sum of its proper divisors (1397850955906).

1623640588550 is a wasteful number, since it uses less digits than its factorization.

1623640588550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16344632 (or 16344627 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 53.

The spelling of 1623640588550 in words is "one trillion, six hundred twenty-three billion, six hundred forty million, five hundred eighty-eight thousand, five hundred fifty".