10428721461 has 8 divisors (see below), whose sum is σ = 15449957760. Its totient is φ = 6952480956.

The previous prime is 10428721427. The next prime is 10428721483. The reversal of 10428721461 is 16412782401.

It is a happy number.

10428721461 is a `hidden beast` number, since 10 + 428 + 7 + 214 + 6 + 1 = 666.

It is not a de Polignac number, because 10428721461 - 2⁶ = 10428721397 is a prime.

It is a super-2 number, since 2×10428721461² (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 (10428721411) 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, 193124445 + ... + 193124498.

It is an arithmetic number, because the mean of its divisors is an integer number (1931244720).

Almost surely, 2^10428721461 is an apocalyptic number.

It is an amenable number.

10428721461 is a deficient number, since it is larger than the sum of its proper divisors (5021236299).

10428721461 is an equidigital number, since it uses as much as digits as its factorization.

10428721461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386248952 (or 386248946 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The spelling of 10428721461 in words is "ten billion, four hundred twenty-eight million, seven hundred twenty-one thousand, four hundred sixty-one".