72012463621 has 8 divisors (see below), whose sum is σ = 83459113344. Its totient is φ = 60855602640.

The previous prime is 72012463577. The next prime is 72012463631. The reversal of 72012463621 is 12636421027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72012463621 - 2⁹ = 72012463109 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 (72012463631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72446650 + ... + 72447643.

It is an arithmetic number, because the mean of its divisors is an integer number (10432389168).

Almost surely, 2^72012463621 is an apocalyptic number.

72012463621 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

72012463621 is a deficient number, since it is larger than the sum of its proper divisors (11446649723).

72012463621 is a wasteful number, since it uses less digits than its factorization.

72012463621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144894371.

The product of its (nonzero) digits is 24192, while the sum is 34.

Adding to 72012463621 its reverse (12636421027), we get a palindrome (84648884648).

The spelling of 72012463621 in words is "seventy-two billion, twelve million, four hundred sixty-three thousand, six hundred twenty-one".