102556651642 has 32 divisors (see below), whose sum is σ = 161459101440. Its totient is φ = 48763777920.

The previous prime is 102556651601. The next prime is 102556651643. The reversal of 102556651642 is 246156655201.

It is not an unprimeable number, because it can be changed into a prime (102556651643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5591667 + ... + 5609977.

It is an arithmetic number, because the mean of its divisors is an integer number (5045596920).

Almost surely, 2^102556651642 is an apocalyptic number.

102556651642 is a deficient number, since it is larger than the sum of its proper divisors (58902449798).

102556651642 is a wasteful number, since it uses less digits than its factorization.

102556651642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19038.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 102556651642 in words is "one hundred two billion, five hundred fifty-six million, six hundred fifty-one thousand, six hundred forty-two".