7390789615440 has 2880 divisors, whose sum is σ = 35222902161408. Its totient is φ = 1394753126400.

The previous prime is 7390789615399. The next prime is 7390789615537. The reversal of 7390789615440 is 445169870937.

7390789615440 is a `hidden beast` number, since 7 + 3 + 9 + 0 + 7 + 8 + 9 + 615 + 4 + 4 + 0 = 666.

It is a super-2 number, since 2×7390789615440² (a number of 27 digits) contains 22 as substring.

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 575 ways as a sum of consecutive naturals, for example, 21299105347 + ... + 21299105693.

Almost surely, 2^{7390789615440} is an apocalyptic number.

7390789615440 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 7390789615440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17611451080704).

7390789615440 is an abundant number, since it is smaller than the sum of its proper divisors (27832112545968).

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

7390789615440 is a wasteful number, since it uses less digits than its factorization.

7390789615440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 63.

The spelling of 7390789615440 in words is "seven trillion, three hundred ninety billion, seven hundred eighty-nine million, six hundred fifteen thousand, four hundred forty".