1640562125500 has 48 divisors (see below), whose sum is σ = 3601746989568. Its totient is φ = 652789080000.

The previous prime is 1640562125483. The next prime is 1640562125561. The reversal of 1640562125500 is 55212650461.

It is a self number, because there is not a number n which added to its sum of digits gives 1640562125500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8493831 + ... + 8684830.

It is an arithmetic number, because the mean of its divisors is an integer number (75036395616).

Almost surely, 2^{1640562125500} is an apocalyptic number.

1640562125500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1640562125500 is an abundant number, since it is smaller than the sum of its proper divisors (1961184864068).

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

1640562125500 is a wasteful number, since it uses less digits than its factorization.

1640562125500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17178871 (or 17178859 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

Adding to 1640562125500 its reverse (55212650461), we get a palindrome (1695774775961).

The spelling of 1640562125500 in words is "one trillion, six hundred forty billion, five hundred sixty-two million, one hundred twenty-five thousand, five hundred".