740608081920 has 512 divisors, whose sum is σ = 3009534969600. Its totient is φ = 169274769408.

The previous prime is 740608081877. The next prime is 740608081963. The reversal of 740608081920 is 29180806047.

740608081920 is a `hidden beast` number, since 7 + 4 + 0 + 608 + 0 + 8 + 19 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (740608081877) and next prime (740608081963).

It is a tau number, because it is divible by the number of its divisors (512).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30953802 + ... + 30977718.

Almost surely, 2^740608081920 is an apocalyptic number.

740608081920 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 740608081920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1504767484800).

740608081920 is an abundant number, since it is smaller than the sum of its proper divisors (2268926887680).

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

740608081920 is an equidigital number, since it uses as much as digits as its factorization.

740608081920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23968 (or 23934 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

Adding to 740608081920 its reverse (29180806047), we get a palindrome (769788887967).

The spelling of 740608081920 in words is "seven hundred forty billion, six hundred eight million, eighty-one thousand, nine hundred twenty".