72427331443407 has 4 divisors (see below), whose sum is σ = 96569775257880. Its totient is φ = 48284887628936.

The previous prime is 72427331443391. The next prime is 72427331443451. The reversal of 72427331443407 is 70434413372427.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72427331443407 - 2⁴ = 72427331443391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72427331443407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72427331443487) 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, 12071221907232 + ... + 12071221907237.

It is an arithmetic number, because the mean of its divisors is an integer number (24142443814470).

Almost surely, 2^{72427331443407} is an apocalyptic number.

72427331443407 is a deficient number, since it is larger than the sum of its proper divisors (24142443814473).

72427331443407 is a wasteful number, since it uses less digits than its factorization.

72427331443407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24142443814472.

The product of its (nonzero) digits is 9483264, while the sum is 51.

The spelling of 72427331443407 in words is "seventy-two trillion, four hundred twenty-seven billion, three hundred thirty-one million, four hundred forty-three thousand, four hundred seven".