78414749472 has 24 divisors (see below), whose sum is σ = 205838717616. Its totient is φ = 26138249792.

The previous prime is 78414749447. The next prime is 78414749513. The reversal of 78414749472 is 27494741487.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×78414749472² (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, 408410058 + ... + 408410249.

It is an arithmetic number, because the mean of its divisors is an integer number (8576613234).

Almost surely, 2^78414749472 is an apocalyptic number.

It is an amenable number.

78414749472 is an abundant number, since it is smaller than the sum of its proper divisors (127423968144).

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

78414749472 is a wasteful number, since it uses less digits than its factorization.

78414749472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816820320 (or 816820312 counting only the distinct ones).

The product of its digits is 12644352, while the sum is 57.

The spelling of 78414749472 in words is "seventy-eight billion, four hundred fourteen million, seven hundred forty-nine thousand, four hundred seventy-two".