38996698978 has 4 divisors (see below), whose sum is σ = 58495048470. Its totient is φ = 19498349488.

The previous prime is 38996698957. The next prime is 38996698987. The reversal of 38996698978 is 87989669983.

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

It can be written as a sum of positive squares in only one way, i.e., 34059809809 + 4936889169 = 184553^2 + 70263^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9749174743 + ... + 9749174746.

Almost surely, 2^38996698978 is an apocalyptic number.

38996698978 is a deficient number, since it is larger than the sum of its proper divisors (19498349492).

38996698978 is a wasteful number, since it uses less digits than its factorization.

38996698978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19498349491.

The product of its digits is 2539579392, while the sum is 82.

The spelling of 38996698978 in words is "thirty-eight billion, nine hundred ninety-six million, six hundred ninety-eight thousand, nine hundred seventy-eight".