246172621421 has 4 divisors (see below), whose sum is σ = 259129075200. Its totient is φ = 233216167644.

The previous prime is 246172621381. The next prime is 246172621427. The reversal of 246172621421 is 124126271642.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 246172621421 - 2²² = 246168427117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (246172621427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6478226861 + ... + 6478226898.

It is an arithmetic number, because the mean of its divisors is an integer number (64782268800).

Almost surely, 2^246172621421 is an apocalyptic number.

It is an amenable number.

246172621421 is a deficient number, since it is larger than the sum of its proper divisors (12956453779).

246172621421 is a wasteful number, since it uses less digits than its factorization.

246172621421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12956453778.

The product of its digits is 64512, while the sum is 38.

The spelling of 246172621421 in words is "two hundred forty-six billion, one hundred seventy-two million, six hundred twenty-one thousand, four hundred twenty-one".