72071378416 has 40 divisors (see below), whose sum is σ = 154280687904. Its totient is φ = 32441333760.

The previous prime is 72071378369. The next prime is 72071378419. The reversal of 72071378416 is 61487317027.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72071378419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5753925 + ... + 5766436.

Almost surely, 2^72071378416 is an apocalyptic number.

It is an amenable number.

72071378416 is an abundant number, since it is smaller than the sum of its proper divisors (82209309488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72071378416 is a wasteful number, since it uses less digits than its factorization.

72071378416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11520409 (or 11520403 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 46.

The spelling of 72071378416 in words is "seventy-two billion, seventy-one million, three hundred seventy-eight thousand, four hundred sixteen".