102540152444 has 24 divisors (see below), whose sum is σ = 183708053760. Its totient is φ = 50053301424.

The previous prime is 102540152417. The next prime is 102540152447. The reversal of 102540152444 is 444251045201.

It is a self number, because there is not a number n which added to its sum of digits gives 102540152444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102540152447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210347 + ... + 499325.

It is an arithmetic number, because the mean of its divisors is an integer number (7654502240).

Almost surely, 2^102540152444 is an apocalyptic number.

It is an amenable number.

102540152444 is a deficient number, since it is larger than the sum of its proper divisors (81167901316).

102540152444 is a wasteful number, since it uses less digits than its factorization.

102540152444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291089 (or 291087 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

Adding to 102540152444 its reverse (444251045201), we get a palindrome (546791197645).

The spelling of 102540152444 in words is "one hundred two billion, five hundred forty million, one hundred fifty-two thousand, four hundred forty-four".