78408001347543 has 96 divisors (see below), whose sum is σ = 137263336857600. Its totient is φ = 44096698090368.

The previous prime is 78408001347521. The next prime is 78408001347553. The reversal of 78408001347543 is 34574310080487.

78408001347543 is a `hidden beast` number, since 7 + 8 + 4 + 0 + 80 + 0 + 13 + 4 + 7 + 543 = 666.

It is not a de Polignac number, because 78408001347543 - 2¹⁶ = 78408001282007 is a prime.

It is a super-2 number, since 2×78408001347543² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78408001347543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78408001347553) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 99683946 + ... + 100467432.

It is an arithmetic number, because the mean of its divisors is an integer number (1429826425600).

Almost surely, 2^{78408001347543} is an apocalyptic number.

78408001347543 is a deficient number, since it is larger than the sum of its proper divisors (58855335510057).

78408001347543 is a wasteful number, since it uses less digits than its factorization.

78408001347543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784706 (or 784693 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 54.

The spelling of 78408001347543 in words is "seventy-eight trillion, four hundred eight billion, one million, three hundred forty-seven thousand, five hundred forty-three".