72434020253 has 4 divisors (see below), whose sum is σ = 82781737440. Its totient is φ = 62086303068.

The previous prime is 72434020247. The next prime is 72434020259. The reversal of 72434020253 is 35202043427.

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 an interprime number because it is at equal distance from previous prime (72434020247) and next prime (72434020259).

It is a cyclic number.

It is not a de Polignac number, because 72434020253 - 2¹² = 72434016157 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 (72434020259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5173858583 + ... + 5173858596.

It is an arithmetic number, because the mean of its divisors is an integer number (20695434360).

Almost surely, 2^72434020253 is an apocalyptic number.

It is an amenable number.

72434020253 is a deficient number, since it is larger than the sum of its proper divisors (10347717187).

72434020253 is a wasteful number, since it uses less digits than its factorization.

72434020253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10347717186.

The product of its (nonzero) digits is 40320, while the sum is 32.

The spelling of 72434020253 in words is "seventy-two billion, four hundred thirty-four million, twenty thousand, two hundred fifty-three".