781250000102 has 64 divisors (see below), whose sum is σ = 1449848816640. Its totient is φ = 310407552000.

The previous prime is 781250000099. The next prime is 781250000143. The reversal of 781250000102 is 201000052187.

It is a super-2 number, since 2×781250000102² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12744758 + ... + 12805910.

It is an arithmetic number, because the mean of its divisors is an integer number (22653887760).

Almost surely, 2^781250000102 is an apocalyptic number.

781250000102 is a deficient number, since it is larger than the sum of its proper divisors (668598816538).

781250000102 is a wasteful number, since it uses less digits than its factorization.

781250000102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63549.

The product of its (nonzero) digits is 1120, while the sum is 26.

Adding to 781250000102 its reverse (201000052187), we get a palindrome (982250052289).

The spelling of 781250000102 in words is "seven hundred eighty-one billion, two hundred fifty million, one hundred two", and thus it is an aban number.