102556426544 has 160 divisors (see below), whose sum is σ = 247490826240. Its totient is φ = 40516070400.

The previous prime is 102556426517. The next prime is 102556426547. The reversal of 102556426544 is 445624655201.

It is a super-3 number, since 3×102556426544³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 102556426495 and 102556426504.

It is not an unprimeable number, because it can be changed into a prime (102556426547) 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, 2604797 + ... + 2643875.

It is an arithmetic number, because the mean of its divisors is an integer number (1546817664).

Almost surely, 2^102556426544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102556426544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123745413120).

102556426544 is an abundant number, since it is smaller than the sum of its proper divisors (144934399696).

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

102556426544 is a wasteful number, since it uses less digits than its factorization.

102556426544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39179 (or 39173 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 44.

The spelling of 102556426544 in words is "one hundred two billion, five hundred fifty-six million, four hundred twenty-six thousand, five hundred forty-four".