73045693978 has 8 divisors (see below), whose sum is σ = 109606215060. Its totient is φ = 36510288960.

The previous prime is 73045693969. The next prime is 73045694021. The reversal of 73045693978 is 87939654037.

It can be written as a sum of positive squares in 2 ways, for example, as 70592770249 + 2452923729 = 265693^2 + 49527^2 .

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

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, 6271743 + ... + 6283378.

Almost surely, 2^73045693978 is an apocalyptic number.

73045693978 is a deficient number, since it is larger than the sum of its proper divisors (36560521082).

73045693978 is a wasteful number, since it uses less digits than its factorization.

73045693978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12558032.

The product of its (nonzero) digits is 34292160, while the sum is 61.

The spelling of 73045693978 in words is "seventy-three billion, forty-five million, six hundred ninety-three thousand, nine hundred seventy-eight".