38416648251 has 4 divisors (see below), whose sum is σ = 51222197672. Its totient is φ = 25611098832.

The previous prime is 38416648243. The next prime is 38416648271. The reversal of 38416648251 is 15284661483.

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

It is not a de Polignac number, because 38416648251 - 2³ = 38416648243 is a prime.

It is a super-2 number, since 2×38416648251² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38416648251.

It is not an unprimeable number, because it can be changed into a prime (38416648271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6402774706 + ... + 6402774711.

It is an arithmetic number, because the mean of its divisors is an integer number (12805549418).

Almost surely, 2^38416648251 is an apocalyptic number.

38416648251 is a deficient number, since it is larger than the sum of its proper divisors (12805549421).

38416648251 is a wasteful number, since it uses less digits than its factorization.

38416648251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12805549420.

The product of its digits is 1105920, while the sum is 48.

The spelling of 38416648251 in words is "thirty-eight billion, four hundred sixteen million, six hundred forty-eight thousand, two hundred fifty-one".