78465761520135 has 48 divisors (see below), whose sum is σ = 138371995926528. Its totient is φ = 37940343122880.

The previous prime is 78465761520059. The next prime is 78465761520151. The reversal of 78465761520135 is 53102516756487.

It is not a de Polignac number, because 78465761520135 - 2¹⁶ = 78465761454599 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58232839 + ... + 59565048.

It is an arithmetic number, because the mean of its divisors is an integer number (2882749915136).

Almost surely, 2^{78465761520135} is an apocalyptic number.

78465761520135 is a deficient number, since it is larger than the sum of its proper divisors (59906234406393).

78465761520135 is a wasteful number, since it uses less digits than its factorization.

78465761520135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117798284 (or 117798273 counting only the distinct ones).

The product of its (nonzero) digits is 42336000, while the sum is 60.

The spelling of 78465761520135 in words is "seventy-eight trillion, four hundred sixty-five billion, seven hundred sixty-one million, five hundred twenty thousand, one hundred thirty-five".