403426085744640 has 2496 divisors, whose sum is σ = 1582340133224448. Its totient is φ = 87397761024000.

The previous prime is 403426085744621. The next prime is 403426085744683. The reversal of 403426085744640 is 46447580624304.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1197110046552 + ... + 1197110046888.

It is an arithmetic number, because the mean of its divisors is an integer number (633950373888).

Almost surely, 2^{403426085744640} is an apocalyptic number.

403426085744640 is a gapful number since it is divisible by the number (40) 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 403426085744640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (791170066612224).

403426085744640 is an abundant number, since it is smaller than the sum of its proper divisors (1178914047479808).

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

403426085744640 is a wasteful number, since it uses less digits than its factorization.

403426085744640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 61931520, while the sum is 57.

The spelling of 403426085744640 in words is "four hundred three trillion, four hundred twenty-six billion, eighty-five million, seven hundred forty-four thousand, six hundred forty".