78519420065474 has 8 divisors (see below), whose sum is σ = 118559124337728. Its totient is φ = 38999711952900.

The previous prime is 78519420065441. The next prime is 78519420065483. The reversal of 78519420065474 is 47456002491587.

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

It is a super-2 number, since 2×78519420065474² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129999039542 + ... + 129999040145.

It is an arithmetic number, because the mean of its divisors is an integer number (14819890542216).

Almost surely, 2^{78519420065474} is an apocalyptic number.

78519420065474 is a deficient number, since it is larger than the sum of its proper divisors (40039704272254).

78519420065474 is a wasteful number, since it uses less digits than its factorization.

78519420065474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259998079840.

The product of its (nonzero) digits is 67737600, while the sum is 62.

The spelling of 78519420065474 in words is "seventy-eight trillion, five hundred nineteen billion, four hundred twenty million, sixty-five thousand, four hundred seventy-four".