10129647780 has 240 divisors, whose sum is σ = 37204142976. Its totient is φ = 2258772480.

The previous prime is 10129647757. The next prime is 10129647799. The reversal of 10129647780 is 8774692101.

It is a happy number.

10129647780 is a `hidden beast` number, since 1 + 0 + 12 + 96 + 477 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 454047 + ... + 475833.

Almost surely, 2^10129647780 is an apocalyptic number.

10129647780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10129647780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18602071488).

10129647780 is an abundant number, since it is smaller than the sum of its proper divisors (27074495196).

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

10129647780 is a wasteful number, since it uses less digits than its factorization.

10129647780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21856 (or 21845 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The spelling of 10129647780 in words is "ten billion, one hundred twenty-nine million, six hundred forty-seven thousand, seven hundred eighty".