48310978781 has 4 divisors (see below), whose sum is σ = 52027207932. Its totient is φ = 44594749632.

The previous prime is 48310978763. The next prime is 48310978789. The reversal of 48310978781 is 18787901384.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13216951225 + 35094027556 = 114965^2 + 187334^2 .

It is a cyclic number.

It is not a de Polignac number, because 48310978781 - 2¹⁴ = 48310962397 is a prime.

It is a super-2 number, since 2×48310978781² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48310978789) 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, 1858114556 + ... + 1858114581.

It is an arithmetic number, because the mean of its divisors is an integer number (13006801983).

Almost surely, 2^48310978781 is an apocalyptic number.

It is an amenable number.

48310978781 is a deficient number, since it is larger than the sum of its proper divisors (3716229151).

48310978781 is a wasteful number, since it uses less digits than its factorization.

48310978781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3716229150.

The product of its (nonzero) digits is 2709504, while the sum is 56.

The spelling of 48310978781 in words is "forty-eight billion, three hundred ten million, nine hundred seventy-eight thousand, seven hundred eighty-one".