74356072778 has 24 divisors (see below), whose sum is σ = 127877961708. Its totient is φ = 32299468032.

The previous prime is 74356072753. The next prime is 74356072781. The reversal of 74356072778 is 87727065347.

It can be written as a sum of positive squares in 6 ways, for example, as 6442149169 + 67913923609 = 80263^2 + 260603^2 .

It is a super-3 number, since 3×74356072778³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6464501 + ... + 6475992.

Almost surely, 2^74356072778 is an apocalyptic number.

74356072778 is a deficient number, since it is larger than the sum of its proper divisors (53521888930).

74356072778 is a wasteful number, since it uses less digits than its factorization.

74356072778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12940538 (or 12940525 counting only the distinct ones).

The product of its (nonzero) digits is 13829760, while the sum is 56.

The spelling of 74356072778 in words is "seventy-four billion, three hundred fifty-six million, seventy-two thousand, seven hundred seventy-eight".