78007085448877 has 8 divisors (see below), whose sum is σ = 84118021598520. Its totient is φ = 71911919458560.

The previous prime is 78007085448857. The next prime is 78007085448967. The reversal of 78007085448877 is 77884458070087.

It can be written as a sum of positive squares in 4 ways, for example, as 1206908776836 + 76800176672041 = 1098594^2 + 8763571^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78007085448877 is a prime.

It is a super-2 number, since 2×78007085448877² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78007085448857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3942529552 + ... + 3942549337.

It is an arithmetic number, because the mean of its divisors is an integer number (10514752699815).

Almost surely, 2^{78007085448877} is an apocalyptic number.

It is an amenable number.

78007085448877 is a deficient number, since it is larger than the sum of its proper divisors (6110936149643).

78007085448877 is a wasteful number, since it uses less digits than its factorization.

78007085448877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7885079663.

The product of its (nonzero) digits is 786759680, while the sum is 73.

The spelling of 78007085448877 in words is "seventy-eight trillion, seven billion, eighty-five million, four hundred forty-eight thousand, eight hundred seventy-seven".