78472013120456 has 8 divisors (see below), whose sum is σ = 147135024600870. Its totient is φ = 39236006560224.

The previous prime is 78472013120441. The next prime is 78472013120467. The reversal of 78472013120456 is 65402131027487.

It can be written as a sum of positive squares in only one way, i.e., 78445563302500 + 26449817956 = 8856950^2 + 162634^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×78472013120456² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4904500820021 + ... + 4904500820036.

Almost surely, 2^{78472013120456} is an apocalyptic number.

It is an amenable number.

78472013120456 is a deficient number, since it is larger than the sum of its proper divisors (68663011480414).

78472013120456 is a wasteful number, since it uses less digits than its factorization.

78472013120456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9809001640063 (or 9809001640059 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 50.

The spelling of 78472013120456 in words is "seventy-eight trillion, four hundred seventy-two billion, thirteen million, one hundred twenty thousand, four hundred fifty-six".