747949142619648 has 320 divisors, whose sum is σ = 2286257381591040. Its totient is φ = 241183418572800.

The previous prime is 747949142619641. The next prime is 747949142619709. The reversal of 747949142619648 is 846916241949747.

747949142619648 is a `hidden beast` number, since 7 + 4 + 7 + 9 + 491 + 4 + 2 + 61 + 9 + 64 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747949142619641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1146886303 + ... + 1147538273.

It is an arithmetic number, because the mean of its divisors is an integer number (7144554317472).

Almost surely, 2^{747949142619648} 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 747949142619648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1143128690795520).

747949142619648 is an abundant number, since it is smaller than the sum of its proper divisors (1538308238971392).

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

747949142619648 is a wasteful number, since it uses less digits than its factorization.

747949142619648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654706 (or 654684 counting only the distinct ones).

The product of its digits is 5267275776, while the sum is 81.

The spelling of 747949142619648 in words is "seven hundred forty-seven trillion, nine hundred forty-nine billion, one hundred forty-two million, six hundred nineteen thousand, six hundred forty-eight".