48771129878690 has 32 divisors (see below), whose sum is σ = 90161986212144. Its totient is φ = 18980922205440.

The previous prime is 48771129878663. The next prime is 48771129878693. The reversal of 48771129878690 is 9687892117784.

It is a Cunningham number, because it is equal to 6983633²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 28168781360329 + 20602348518361 = 5307427^2 + 4538981^2 .

It is a super-2 number, since 2×48771129878690² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (48771129878693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25692860 + ... + 27525720.

Almost surely, 2^{48771129878690} is an apocalyptic number.

48771129878690 is a deficient number, since it is larger than the sum of its proper divisors (41390856333454).

48771129878690 is a wasteful number, since it uses less digits than its factorization.

48771129878690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904822.

The product of its (nonzero) digits is 682795008, while the sum is 77.

The spelling of 48771129878690 in words is "forty-eight trillion, seven hundred seventy-one billion, one hundred twenty-nine million, eight hundred seventy-eight thousand, six hundred ninety".