397798544154 has 128 divisors (see below), whose sum is σ = 942296924160. Its totient is φ = 111528933120.

The previous prime is 397798544123. The next prime is 397798544161. The reversal of 397798544154 is 451445897793.

It is a Harshad number since it is a multiple of its sum of digits (66).

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, 7985127 + ... + 8034789.

It is an arithmetic number, because the mean of its divisors is an integer number (7361694720).

Almost surely, 2^397798544154 is an apocalyptic number.

397798544154 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 397798544154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (471148462080).

397798544154 is an abundant number, since it is smaller than the sum of its proper divisors (544498380006).

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

397798544154 is a wasteful number, since it uses less digits than its factorization.

397798544154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49777 (or 49755 counting only the distinct ones).

The product of its digits is 152409600, while the sum is 66.

The spelling of 397798544154 in words is "three hundred ninety-seven billion, seven hundred ninety-eight million, five hundred forty-four thousand, one hundred fifty-four".