102391548552 has 40 divisors (see below), whose sum is σ = 286791144750. Its totient is φ = 34130515968.

The previous prime is 102391548541. The next prime is 102391548559. The reversal of 102391548552 is 255845193201.

102391548552 is a `hidden beast` number, since 1 + 0 + 2 + 3 + 91 + 5 + 4 + 8 + 552 = 666.

It can be written as a sum of positive squares in only one way, i.e., 100784661156 + 1606887396 = 317466^2 + 40086^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102391548498 and 102391548507.

It is not an unprimeable number, because it can be changed into a prime (102391548559) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 79005177 + ... + 79006472.

Almost surely, 2^102391548552 is an apocalyptic number.

102391548552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102391548552 is an abundant number, since it is smaller than the sum of its proper divisors (184399596198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102391548552 is a wasteful number, since it uses less digits than its factorization.

102391548552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158011667 (or 158011654 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 102391548552 in words is "one hundred two billion, three hundred ninety-one million, five hundred forty-eight thousand, five hundred fifty-two".