746275778820 has 1728 divisors, whose sum is σ = 2973243506688. Its totient is φ = 155812377600.

The previous prime is 746275778771. The next prime is 746275778827. The reversal of 746275778820 is 28877572647.

It is a happy number.

746275778820 is a `hidden beast` number, since 7 + 462 + 7 + 5 + 77 + 88 + 20 = 666.

It is not an unprimeable number, because it can be changed into a prime (746275778827) by changing a digit.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 11138444427 + ... + 11138444493.

Almost surely, 2^746275778820 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 746275778820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1486621753344).

746275778820 is an abundant number, since it is smaller than the sum of its proper divisors (2226967727868).

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

746275778820 is a wasteful number, since it uses less digits than its factorization.

746275778820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 73758720, while the sum is 63.

The spelling of 746275778820 in words is "seven hundred forty-six billion, two hundred seventy-five million, seven hundred seventy-eight thousand, eight hundred twenty".