397150727760 has 60 divisors (see below), whose sum is σ = 1333764529812. Its totient is φ = 105906860544.

The previous prime is 397150727759. The next prime is 397150727767. The reversal of 397150727760 is 67727051793.

397150727760 is a `hidden beast` number, since 3 + 9 + 7 + 1 + 507 + 2 + 77 + 60 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 200249090064 + 196901637696 = 447492^2 + 443736^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a junction number, because it is equal to n+sod(n) for n = 397150727697 and 397150727706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397150727767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 275798397 + ... + 275799836.

Almost surely, 2^397150727760 is an apocalyptic number.

397150727760 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

397150727760 is an abundant number, since it is smaller than the sum of its proper divisors (936613802052).

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

397150727760 is a wasteful number, since it uses less digits than its factorization.

397150727760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551598252 (or 551598243 counting only the distinct ones).

The product of its (nonzero) digits is 3889620, while the sum is 54.

The spelling of 397150727760 in words is "three hundred ninety-seven billion, one hundred fifty million, seven hundred twenty-seven thousand, seven hundred sixty".