10421454640 has 40 divisors (see below), whose sum is σ = 24375002400. Its totient is φ = 4143614976.

The previous prime is 10421454611. The next prime is 10421454649. The reversal of 10421454640 is 4645412401.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (10421454649) 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, 376665 + ... + 403384.

It is an arithmetic number, because the mean of its divisors is an integer number (609375060).

Almost surely, 2^10421454640 is an apocalyptic number.

10421454640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10421454640 is an abundant number, since it is smaller than the sum of its proper divisors (13953547760).

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

10421454640 is a wasteful number, since it uses less digits than its factorization.

10421454640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780229 (or 780223 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The spelling of 10421454640 in words is "ten billion, four hundred twenty-one million, four hundred fifty-four thousand, six hundred forty".