1640676243550 has 48 divisors (see below), whose sum is σ = 3067244433792. Its totient is φ = 652922588000.

The previous prime is 1640676243527. The next prime is 1640676243551. The reversal of 1640676243550 is 553426760461.

It is a super-2 number, since 2×1640676243550² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1640676243494 and 1640676243503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640676243551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16419039 + ... + 16518661.

It is an arithmetic number, because the mean of its divisors is an integer number (63900925704).

Almost surely, 2^{1640676243550} is an apocalyptic number.

1640676243550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1640676243550 is a deficient number, since it is larger than the sum of its proper divisors (1426568190242).

1640676243550 is a wasteful number, since it uses less digits than its factorization.

1640676243550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101313 (or 101308 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 49.

The spelling of 1640676243550 in words is "one trillion, six hundred forty billion, six hundred seventy-six million, two hundred forty-three thousand, five hundred fifty".