78507203340534 has 64 divisors (see below), whose sum is σ = 164304307464192. Its totient is φ = 24981798643200.

The previous prime is 78507203340473. The next prime is 78507203340539. The reversal of 78507203340534 is 43504330270587.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78507203340539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49244154 + ... + 50813394.

It is an arithmetic number, because the mean of its divisors is an integer number (2567254804128).

Almost surely, 2^{78507203340534} is an apocalyptic number.

78507203340534 is an abundant number, since it is smaller than the sum of its proper divisors (85797104123658).

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

78507203340534 is a wasteful number, since it uses less digits than its factorization.

78507203340534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573661.

The product of its (nonzero) digits is 8467200, while the sum is 51.

The spelling of 78507203340534 in words is "seventy-eight trillion, five hundred seven billion, two hundred three million, three hundred forty thousand, five hundred thirty-four".