74015378061 has 4 divisors (see below), whose sum is σ = 98687170752. Its totient is φ = 49343585372.

The previous prime is 74015378011. The next prime is 74015378147. The reversal of 74015378061 is 16087351047.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74015378061 - 2¹¹ = 74015376013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74015378011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12335896341 + ... + 12335896346.

It is an arithmetic number, because the mean of its divisors is an integer number (24671792688).

Almost surely, 2^74015378061 is an apocalyptic number.

It is an amenable number.

74015378061 is a deficient number, since it is larger than the sum of its proper divisors (24671792691).

74015378061 is a wasteful number, since it uses less digits than its factorization.

74015378061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24671792690.

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 74015378061 in words is "seventy-four billion, fifteen million, three hundred seventy-eight thousand, sixty-one".