102056257758 has 96 divisors (see below), whose sum is σ = 261306432000. Its totient is φ = 25987747968.

The previous prime is 102056257739. The next prime is 102056257783. The reversal of 102056257758 is 857752650201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42058 + ... + 453741.

It is an arithmetic number, because the mean of its divisors is an integer number (2721942000).

Almost surely, 2^102056257758 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102056257758, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130653216000).

102056257758 is an abundant number, since it is smaller than the sum of its proper divisors (159250174242).

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

102056257758 is a wasteful number, since it uses less digits than its factorization.

102056257758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495866 (or 495853 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 48.

The spelling of 102056257758 in words is "one hundred two billion, fifty-six million, two hundred fifty-seven thousand, seven hundred fifty-eight".