74278475898739 has 8 divisors (see below), whose sum is σ = 84903725104128. Its totient is φ = 63656736284040.

The previous prime is 74278475898721. The next prime is 74278475898751. The reversal of 74278475898739 is 93789857487247.

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

It is a cyclic number.

It is not a de Polignac number, because 74278475898739 - 2¹⁷ = 74278475767667 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74278475898739.

It is not an unprimeable number, because it can be changed into a prime (74278475898719) 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, 877352317 + ... + 877436974.

It is an arithmetic number, because the mean of its divisors is an integer number (10612965638016).

Almost surely, 2^{74278475898739} is an apocalyptic number.

74278475898739 is a deficient number, since it is larger than the sum of its proper divisors (10625249205389).

74278475898739 is a wasteful number, since it uses less digits than its factorization.

74278475898739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754795345.

The product of its digits is 47795650560, while the sum is 88.

The spelling of 74278475898739 in words is "seventy-four trillion, two hundred seventy-eight billion, four hundred seventy-five million, eight hundred ninety-eight thousand, seven hundred thirty-nine".