397543456156 has 24 divisors (see below), whose sum is σ = 867367541376. Its totient is φ = 154887060720.

The previous prime is 397543456103. The next prime is 397543456159. The reversal of 397543456156 is 651654345793.

It is a super-3 number, since 3×397543456156³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 397543456156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397543456159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 645362446 + ... + 645363061.

It is an arithmetic number, because the mean of its divisors is an integer number (36140314224).

Almost surely, 2^397543456156 is an apocalyptic number.

It is an amenable number.

397543456156 is an abundant number, since it is smaller than the sum of its proper divisors (469824085220).

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

397543456156 is a wasteful number, since it uses less digits than its factorization.

397543456156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290725529 (or 1290725527 counting only the distinct ones).

The product of its digits is 40824000, while the sum is 58.

The spelling of 397543456156 in words is "three hundred ninety-seven billion, five hundred forty-three million, four hundred fifty-six thousand, one hundred fifty-six".