74078481451 has 4 divisors (see below), whose sum is σ = 79776826192. Its totient is φ = 68380136712.

The previous prime is 74078481439. The next prime is 74078481467. The reversal of 74078481451 is 15418487047.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74078481451 - 2¹⁵ = 74078448683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74078481395 and 74078481404.

It is not an unprimeable number, because it can be changed into a prime (74078481401) 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, 2849172351 + ... + 2849172376.

It is an arithmetic number, because the mean of its divisors is an integer number (19944206548).

Almost surely, 2^74078481451 is an apocalyptic number.

74078481451 is a deficient number, since it is larger than the sum of its proper divisors (5698344741).

74078481451 is a wasteful number, since it uses less digits than its factorization.

74078481451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5698344740.

The product of its (nonzero) digits is 1003520, while the sum is 49.

The spelling of 74078481451 in words is "seventy-four billion, seventy-eight million, four hundred eighty-one thousand, four hundred fifty-one".