7494445871640 has 3072 divisors, whose sum is σ = 35133751296000. Its totient is φ = 1383466106880.

The previous prime is 7494445871597. The next prime is 7494445871657. The reversal of 7494445871640 is 461785444947.

7494445871640 is a `hidden beast` number, since 7 + 4 + 9 + 4 + 4 + 4 + 587 + 1 + 6 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 767 ways as a sum of consecutive naturals, for example, 17308188864 + ... + 17308189296.

It is an arithmetic number, because the mean of its divisors is an integer number (11436768000).

Almost surely, 2^{7494445871640} is an apocalyptic number.

7494445871640 is a gapful number since it is divisible by the number (70) 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 7494445871640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17566875648000).

7494445871640 is an abundant number, since it is smaller than the sum of its proper divisors (27639305424360).

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

7494445871640 is a wasteful number, since it uses less digits than its factorization.

7494445871640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 108380160, while the sum is 63.

The spelling of 7494445871640 in words is "seven trillion, four hundred ninety-four billion, four hundred forty-five million, eight hundred seventy-one thousand, six hundred forty".