72878020402 has 8 divisors (see below), whose sum is σ = 119254942512. Its totient is φ = 33126372900.

The previous prime is 72878020387. The next prime is 72878020427. The reversal of 72878020402 is 20402087827.

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

It is a super-2 number, since 2×72878020402² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1656318624 + ... + 1656318667.

It is an arithmetic number, because the mean of its divisors is an integer number (14906867814).

Almost surely, 2^72878020402 is an apocalyptic number.

72878020402 is a deficient number, since it is larger than the sum of its proper divisors (46376922110).

72878020402 is a wasteful number, since it uses less digits than its factorization.

72878020402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3312637304.

The product of its (nonzero) digits is 100352, while the sum is 40.

The spelling of 72878020402 in words is "seventy-two billion, eight hundred seventy-eight million, twenty thousand, four hundred two".