1672296945840 has 80 divisors (see below), whose sum is σ = 5760133932000. Its totient is φ = 445945851648.

The previous prime is 1672296945827. The next prime is 1672296945841. The reversal of 1672296945840 is 485496922761.

1672296945840 is a `hidden beast` number, since 1 + 67 + 2 + 29 + 69 + 458 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (1672296945841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387103615 + ... + 387107934.

It is an arithmetic number, because the mean of its divisors is an integer number (72001674150).

Almost surely, 2^{1672296945840} is an apocalyptic number.

1672296945840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1672296945840 is an abundant number, since it is smaller than the sum of its proper divisors (4087836986160).

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

1672296945840 is a wasteful number, since it uses less digits than its factorization.

1672296945840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774211571 (or 774211559 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 1672296945840 in words is "one trillion, six hundred seventy-two billion, two hundred ninety-six million, nine hundred forty-five thousand, eight hundred forty".