68405436087052 has 12 divisors (see below), whose sum is σ = 119709672251176. Its totient is φ = 34202672586720.

The previous prime is 68405436087031. The next prime is 68405436087059. The reversal of 68405436087052 is 25078063450486.

It is not an unprimeable number, because it can be changed into a prime (68405436087059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7858113 + ... + 14091160.

Almost surely, 2^{68405436087052} is an apocalyptic number.

It is an amenable number.

68405436087052 is a deficient number, since it is larger than the sum of its proper divisors (51304236164124).

68405436087052 is a wasteful number, since it uses less digits than its factorization.

68405436087052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22728408 (or 22728406 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 58.

The spelling of 68405436087052 in words is "sixty-eight trillion, four hundred five billion, four hundred thirty-six million, eighty-seven thousand, fifty-two".