1466561605500 has 96 divisors (see below), whose sum is σ = 4745141593920. Its totient is φ = 391083091200.

The previous prime is 1466561605489. The next prime is 1466561605583. The reversal of 1466561605500 is 55061656641.

1466561605500 is a `hidden beast` number, since 1 + 46 + 6 + 56 + 1 + 6 + 0 + 550 + 0 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54303597 + ... + 54330596.

It is an arithmetic number, because the mean of its divisors is an integer number (49428558270).

Almost surely, 2^{1466561605500} is an apocalyptic number.

1466561605500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1466561605500 is an abundant number, since it is smaller than the sum of its proper divisors (3278579988420).

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

1466561605500 is a wasteful number, since it uses less digits than its factorization.

1466561605500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108634221 (or 108634203 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 1466561605500 in words is "one trillion, four hundred sixty-six billion, five hundred sixty-one million, six hundred five thousand, five hundred".