78545410765957 has 16 divisors (see below), whose sum is σ = 79773902296000. Its totient is φ = 77318582140800.

The previous prime is 78545410765937. The next prime is 78545410765973. The reversal of 78545410765957 is 75956701454587.

It is a cyclic number.

It is not a de Polignac number, because 78545410765957 - 2²³ = 78545402377349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78545410765957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78545410765937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1118829457 + ... + 1118899657.

It is an arithmetic number, because the mean of its divisors is an integer number (4985868893500).

Almost surely, 2^{78545410765957} is an apocalyptic number.

It is an amenable number.

78545410765957 is a deficient number, since it is larger than the sum of its proper divisors (1228491530043).

78545410765957 is a wasteful number, since it uses less digits than its factorization.

78545410765957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81796.

The product of its (nonzero) digits is 1481760000, while the sum is 73.

The spelling of 78545410765957 in words is "seventy-eight trillion, five hundred forty-five billion, four hundred ten million, seven hundred sixty-five thousand, nine hundred fifty-seven".