1672232312421 has 48 divisors (see below), whose sum is σ = 2794543727040. Its totient is φ = 952316444160.

The previous prime is 1672232312371. The next prime is 1672232312459. The reversal of 1672232312421 is 1242132322761.

1672232312421 is a `hidden beast` number, since 1 + 6 + 7 + 223 + 2 + 3 + 1 + 2 + 421 = 666.

It is not a de Polignac number, because 1672232312421 - 2⁶ = 1672232312357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672232312461) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 239191 + ... + 1844363.

It is an arithmetic number, because the mean of its divisors is an integer number (58219660980).

Almost surely, 2^{1672232312421} is an apocalyptic number.

1672232312421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1672232312421 is a deficient number, since it is larger than the sum of its proper divisors (1122311414619).

1672232312421 is a wasteful number, since it uses less digits than its factorization.

1672232312421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605826 (or 1605823 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The spelling of 1672232312421 in words is "one trillion, six hundred seventy-two billion, two hundred thirty-two million, three hundred twelve thousand, four hundred twenty-one".