78535514212870 has 96 divisors (see below), whose sum is σ = 167365556588160. Its totient is φ = 26356925126400.

The previous prime is 78535514212697. The next prime is 78535514212871. The reversal of 78535514212870 is 7821241553587.

It is a super-3 number, since 3×78535514212870³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78535514212871) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89396916 + ... + 90271144.

It is an arithmetic number, because the mean of its divisors is an integer number (1743391214460).

Almost surely, 2^{78535514212870} is an apocalyptic number.

78535514212870 is an abundant number, since it is smaller than the sum of its proper divisors (88830042375290).

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

78535514212870 is a wasteful number, since it uses less digits than its factorization.

78535514212870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879982 (or 879971 counting only the distinct ones).

The product of its (nonzero) digits is 18816000, while the sum is 58.

The spelling of 78535514212870 in words is "seventy-eight trillion, five hundred thirty-five billion, five hundred fourteen million, two hundred twelve thousand, eight hundred seventy".