102644020270 has 64 divisors (see below), whose sum is σ = 216003303936. Its totient is φ = 34737310080.

The previous prime is 102644020267. The next prime is 102644020279. The reversal of 102644020270 is 72020446201.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102644020279) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 454644 + ... + 641863.

It is an arithmetic number, because the mean of its divisors is an integer number (3375051624).

Almost surely, 2^102644020270 is an apocalyptic number.

102644020270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102644020270 is an abundant number, since it is smaller than the sum of its proper divisors (113359283666).

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

102644020270 is a wasteful number, since it uses less digits than its factorization.

102644020270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096585.

The product of its (nonzero) digits is 5376, while the sum is 28.

Adding to 102644020270 its reverse (72020446201), we get a palindrome (174664466471).

The spelling of 102644020270 in words is "one hundred two billion, six hundred forty-four million, twenty thousand, two hundred seventy".