197979450972 has 24 divisors (see below), whose sum is σ = 462152182800. Its totient is φ = 65964560256.

The previous prime is 197979450971. The next prime is 197979450973. The reversal of 197979450972 is 279054979791.

It is an interprime number because it is at equal distance from previous prime (197979450971) and next prime (197979450973).

It is a junction number, because it is equal to n+sod(n) for n = 197979450897 and 197979450906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197979450971) 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, 3544897 + ... + 3600312.

It is an arithmetic number, because the mean of its divisors is an integer number (19256340950).

Almost surely, 2^197979450972 is an apocalyptic number.

197979450972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

197979450972 is an abundant number, since it is smaller than the sum of its proper divisors (264172731828).

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

197979450972 is a wasteful number, since it uses less digits than its factorization.

197979450972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7147525 (or 7147523 counting only the distinct ones).

The product of its (nonzero) digits is 90016920, while the sum is 69.

The spelling of 197979450972 in words is "one hundred ninety-seven billion, nine hundred seventy-nine million, four hundred fifty thousand, nine hundred seventy-two".