102155313044 has 24 divisors (see below), whose sum is σ = 179035561320. Its totient is φ = 51002348544.

The previous prime is 102155313011. The next prime is 102155313101. The reversal of 102155313044 is 440313551201.

It can be written as a sum of positive squares in 4 ways, for example, as 21051108100 + 81104204944 = 145090^2 + 284788^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102155312998 and 102155313016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10621982 + ... + 10631594.

It is an arithmetic number, because the mean of its divisors is an integer number (7459815055).

Almost surely, 2^102155313044 is an apocalyptic number.

It is an amenable number.

102155313044 is a deficient number, since it is larger than the sum of its proper divisors (76880248276).

102155313044 is a wasteful number, since it uses less digits than its factorization.

102155313044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13259 (or 13257 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 102155313044 its reverse (440313551201), we get a palindrome (542468864245).

The spelling of 102155313044 in words is "one hundred two billion, one hundred fifty-five million, three hundred thirteen thousand, forty-four".