397162154880 has 768 divisors, whose sum is σ = 1486842739200. Its totient is φ = 101179072512.

The previous prime is 397162154801. The next prime is 397162154891. The reversal of 397162154880 is 88451261793.

397162154880 is a `hidden beast` number, since 3 + 9 + 7 + 1 + 621 + 5 + 4 + 8 + 8 + 0 = 666.

It is a super-3 number, since 3×397162154880³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 482578149 + ... + 482578971.

It is an arithmetic number, because the mean of its divisors is an integer number (1935993150).

It is a 1-persistent number, because it is pandigital, but 2⋅397162154880 = 794324309760 is not.

Almost surely, 2^397162154880 is an apocalyptic number.

397162154880 is a gapful number since it is divisible by the number (30) 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 397162154880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (743421369600).

397162154880 is an abundant number, since it is smaller than the sum of its proper divisors (1089680584320).

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

397162154880 is a wasteful number, since it uses less digits than its factorization.

397162154880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993 (or 969 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 397162154880 in words is "three hundred ninety-seven billion, one hundred sixty-two million, one hundred fifty-four thousand, eight hundred eighty".