72878576433 has 16 divisors (see below), whose sum is σ = 106120054656. Its totient is φ = 44216686080.

The previous prime is 72878576417. The next prime is 72878576447. The reversal of 72878576433 is 33467587827.

It is not a de Polignac number, because 72878576433 - 2⁴ = 72878576417 is a prime.

It is a super-3 number, since 3×72878576433³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (72878576473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13156960 + ... + 13162497.

It is an arithmetic number, because the mean of its divisors is an integer number (6632503416).

Almost surely, 2^72878576433 is an apocalyptic number.

It is an amenable number.

72878576433 is a deficient number, since it is larger than the sum of its proper divisors (33241478223).

72878576433 is a wasteful number, since it uses less digits than its factorization.

72878576433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26319544.

The product of its digits is 47416320, while the sum is 60.

It can be divided in two parts, 7287857 and 6433, that added together give a triangular number (7294290 = T₃₈₁₉).

The spelling of 72878576433 in words is "seventy-two billion, eight hundred seventy-eight million, five hundred seventy-six thousand, four hundred thirty-three".