78532878730881 has 32 divisors (see below), whose sum is σ = 107114234572800. Its totient is φ = 51157065464064.

The previous prime is 78532878730879. The next prime is 78532878730913. The reversal of 78532878730881 is 18803787823587.

It is not a de Polignac number, because 78532878730881 - 2¹ = 78532878730879 is a prime.

It is a super-2 number, since 2×78532878730881² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78532878730841) 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, 1237427556 + ... + 1237491018.

It is an arithmetic number, because the mean of its divisors is an integer number (3347319830400).

Almost surely, 2^{78532878730881} is an apocalyptic number.

It is an amenable number.

78532878730881 is a deficient number, since it is larger than the sum of its proper divisors (28581355841919).

78532878730881 is a wasteful number, since it uses less digits than its factorization.

78532878730881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77805.

The product of its (nonzero) digits is 1011548160, while the sum is 75.

The spelling of 78532878730881 in words is "seventy-eight trillion, five hundred thirty-two billion, eight hundred seventy-eight million, seven hundred thirty thousand, eight hundred eighty-one".