72418962871 has 4 divisors (see below), whose sum is σ = 72427548712. Its totient is φ = 72410377032.

The previous prime is 72418962853. The next prime is 72418962877. The reversal of 72418962871 is 17826981427.

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 72418962871 - 2⁵ = 72418962839 is a prime.

It is a super-2 number, since 2×72418962871² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72418962877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4280256 + ... + 4297141.

It is an arithmetic number, because the mean of its divisors is an integer number (18106887178).

Almost surely, 2^72418962871 is an apocalyptic number.

72418962871 is a deficient number, since it is larger than the sum of its proper divisors (8585841).

72418962871 is an equidigital number, since it uses as much as digits as its factorization.

72418962871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8585840.

The product of its digits is 2709504, while the sum is 55.

The spelling of 72418962871 in words is "seventy-two billion, four hundred eighteen million, nine hundred sixty-two thousand, eight hundred seventy-one".