48569355981 has 6 divisors (see below), whose sum is σ = 70155736430. Its totient is φ = 32379570648.

The previous prime is 48569355977. The next prime is 48569355983. The reversal of 48569355981 is 18955396584.

48569355981 is a `hidden beast` number, since 4 + 8 + 5 + 6 + 9 + 35 + 598 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 48286107081 + 283248900 = 219741^2 + 16830^2 .

It is not a de Polignac number, because 48569355981 - 2² = 48569355977 is a prime.

It is a super-2 number, since 2×48569355981² (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 (48569355983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2698297546 + ... + 2698297563.

Almost surely, 2^48569355981 is an apocalyptic number.

It is an amenable number.

48569355981 is a deficient number, since it is larger than the sum of its proper divisors (21586380449).

48569355981 is a wasteful number, since it uses less digits than its factorization.

48569355981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5396595115 (or 5396595112 counting only the distinct ones).

The product of its digits is 46656000, while the sum is 63.

It can be divided in two parts, 48569 and 355981, that added together give a triangular number (404550 = T₈₉₉).

The spelling of 48569355981 in words is "forty-eight billion, five hundred sixty-nine million, three hundred fifty-five thousand, nine hundred eighty-one".