10102523778 has 12 divisors (see below), whose sum is σ = 21888801558. Its totient is φ = 3367507920.

The previous prime is 10102523773. The next prime is 10102523789. The reversal of 10102523778 is 87732520101.

It can be written as a sum of positive squares in only one way, i.e., 9634796649 + 467727129 = 98157^2 + 21627^2 .

It is not an unprimeable number, because it can be changed into a prime (10102523773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280625643 + ... + 280625678.

Almost surely, 2^10102523778 is an apocalyptic number.

10102523778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10102523778 is an abundant number, since it is smaller than the sum of its proper divisors (11786277780).

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

10102523778 is a wasteful number, since it uses less digits than its factorization.

10102523778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561251329 (or 561251326 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The spelling of 10102523778 in words is "ten billion, one hundred two million, five hundred twenty-three thousand, seven hundred seventy-eight".