78304775528673 has 6 divisors (see below), whose sum is σ = 113106897985874. Its totient is φ = 52203183685776.

The previous prime is 78304775528633. The next prime is 78304775528699. The reversal of 78304775528673 is 37682557740387.

78304775528673 is a `hidden beast` number, since 7 + 8 + 3 + 0 + 4 + 7 + 7 + 552 + 8 + 67 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 42433863600384 + 35870911928289 = 6514128^2 + 5989233^2 .

It is not a de Polignac number, because 78304775528673 - 2¹⁷ = 78304775397601 is a prime.

It is a super-2 number, since 2×78304775528673² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78304775528633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4350265307140 + ... + 4350265307157.

Almost surely, 2^{78304775528673} is an apocalyptic number.

It is an amenable number.

78304775528673 is a deficient number, since it is larger than the sum of its proper divisors (34802122457201).

78304775528673 is a wasteful number, since it uses less digits than its factorization.

78304775528673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8700530614303 (or 8700530614300 counting only the distinct ones).

The product of its (nonzero) digits is 1659571200, while the sum is 72.

The spelling of 78304775528673 in words is "seventy-eight trillion, three hundred four billion, seven hundred seventy-five million, five hundred twenty-eight thousand, six hundred seventy-three".