10249946781 has 8 divisors (see below), whose sum is σ = 13791977760. Its totient is φ = 6770606832.

The previous prime is 10249946779. The next prime is 10249946783. The reversal of 10249946781 is 18764994201.

It is an interprime number because it is at equal distance from previous prime (10249946779) and next prime (10249946783).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10249946781 - 2¹ = 10249946779 is a prime.

It is a super-2 number, since 2×10249946781² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10249946783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15672375 + ... + 15673028.

It is an arithmetic number, because the mean of its divisors is an integer number (1723997220).

Almost surely, 2^10249946781 is an apocalyptic number.

It is an amenable number.

10249946781 is a deficient number, since it is larger than the sum of its proper divisors (3542030979).

10249946781 is a wasteful number, since it uses less digits than its factorization.

10249946781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31345515.

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 10249946781 in words is "ten billion, two hundred forty-nine million, nine hundred forty-six thousand, seven hundred eighty-one".