78878344812445 has 8 divisors (see below), whose sum is σ = 98769405678336. Its totient is φ = 60359081247696.

The previous prime is 78878344812383. The next prime is 78878344812457. The reversal of 78878344812445 is 54421844387887.

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

It is a cyclic number.

It is not a de Polignac number, because 78878344812445 - 2¹⁷ = 78878344681373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342949325157 + ... + 342949325386.

It is an arithmetic number, because the mean of its divisors is an integer number (12346175709792).

Almost surely, 2^{78878344812445} is an apocalyptic number.

It is an amenable number.

78878344812445 is a deficient number, since it is larger than the sum of its proper divisors (19891060865891).

78878344812445 is a wasteful number, since it uses less digits than its factorization.

78878344812445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685898650571.

The product of its digits is 1541406720, while the sum is 73.

The spelling of 78878344812445 in words is "seventy-eight trillion, eight hundred seventy-eight billion, three hundred forty-four million, eight hundred twelve thousand, four hundred forty-five".