7474755440640 has 208 divisors, whose sum is σ = 24009407826048. Its totient is φ = 1985508016128.

The previous prime is 7474755440639. The next prime is 7474755440641. The reversal of 7474755440640 is 460445574747.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7474755440639) and next prime (7474755440641).

It is not an unprimeable number, because it can be changed into a prime (7474755440641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15553389 + ... + 16026771.

Almost surely, 2^{7474755440640} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7474755440640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12004703913024).

7474755440640 is an abundant number, since it is smaller than the sum of its proper divisors (16534652385408).

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

7474755440640 is a wasteful number, since it uses less digits than its factorization.

7474755440640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473672 (or 473650 counting only the distinct ones).

The product of its (nonzero) digits is 52684800, while the sum is 57.

The spelling of 7474755440640 in words is "seven trillion, four hundred seventy-four billion, seven hundred fifty-five million, four hundred forty thousand, six hundred forty".