10421574440 has 32 divisors (see below), whose sum is σ = 23890972680. Its totient is φ = 4089975552.

The previous prime is 10421574437. The next prime is 10421574503. The reversal of 10421574440 is 4447512401.

It can be written as a sum of positive squares in 4 ways, for example, as 6505067716 + 3916506724 = 80654^2 + 62582^2 .

It is a super-2 number, since 2×10421574440² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10421574397 and 10421574406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2455799 + ... + 2460038.

Almost surely, 2^10421574440 is an apocalyptic number.

10421574440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10421574440 is an abundant number, since it is smaller than the sum of its proper divisors (13469398240).

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

10421574440 is a wasteful number, since it uses less digits than its factorization.

10421574440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4915901 (or 4915897 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The spelling of 10421574440 in words is "ten billion, four hundred twenty-one million, five hundred seventy-four thousand, four hundred forty".