402773071665720 has 256 divisors, whose sum is σ = 1386181446681600. Its totient is φ = 91713395773440.

The previous prime is 402773071665667. The next prime is 402773071665763. The reversal of 402773071665720 is 27566170377204.

It is a super-2 number, since 2×402773071665720² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 233820222 + ... + 235536498.

It is an arithmetic number, because the mean of its divisors is an integer number (5414771276100).

Almost surely, 2^{402773071665720} is an apocalyptic number.

402773071665720 is a gapful number since it is divisible by the number (40) 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 402773071665720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (693090723340800).

402773071665720 is an abundant number, since it is smaller than the sum of its proper divisors (983408375015880).

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

402773071665720 is a wasteful number, since it uses less digits than its factorization.

402773071665720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717358 (or 1717354 counting only the distinct ones).

The product of its (nonzero) digits is 20744640, while the sum is 57.

The spelling of 402773071665720 in words is "four hundred two trillion, seven hundred seventy-three billion, seventy-one million, six hundred sixty-five thousand, seven hundred twenty".