48158737921 has 4 divisors (see below), whose sum is σ = 55038557632. Its totient is φ = 41278918212.

The previous prime is 48158737903. The next prime is 48158737951. The reversal of 48158737921 is 12973785184.

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 not a de Polignac number, because 48158737921 - 2¹⁷ = 48158606849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48158737951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3439909845 + ... + 3439909858.

It is an arithmetic number, because the mean of its divisors is an integer number (13759639408).

Almost surely, 2^48158737921 is an apocalyptic number.

It is an amenable number.

48158737921 is a deficient number, since it is larger than the sum of its proper divisors (6879819711).

48158737921 is an equidigital number, since it uses as much as digits as its factorization.

48158737921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6879819710.

The product of its digits is 3386880, while the sum is 55.

The spelling of 48158737921 in words is "forty-eight billion, one hundred fifty-eight million, seven hundred thirty-seven thousand, nine hundred twenty-one".