72878347235 has 8 divisors (see below), whose sum is σ = 87534182736. Its totient is φ = 58249233760.

The previous prime is 72878347229. The next prime is 72878347259. The reversal of 72878347235 is 53274387827.

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

It is not a de Polignac number, because 72878347235 - 2²² = 72874152931 is a prime.

It is a super-2 number, since 2×72878347235² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6674504 + ... + 6685413.

It is an arithmetic number, because the mean of its divisors is an integer number (10941772842).

Almost surely, 2^72878347235 is an apocalyptic number.

72878347235 is a deficient number, since it is larger than the sum of its proper divisors (14655835501).

72878347235 is a wasteful number, since it uses less digits than its factorization.

72878347235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13361013.

The product of its digits is 15805440, while the sum is 56.

The spelling of 72878347235 in words is "seventy-two billion, eight hundred seventy-eight million, three hundred forty-seven thousand, two hundred thirty-five".