197451772880 has 40 divisors (see below), whose sum is σ = 459154710432. Its totient is φ = 78967059584.

The previous prime is 197451772871. The next prime is 197451772901. The reversal of 197451772880 is 88277154791.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×197451772880² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259019 + ... + 679701.

Almost surely, 2^197451772880 is an apocalyptic number.

197451772880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197451772880 is an abundant number, since it is smaller than the sum of its proper divisors (261702937552).

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

197451772880 is a wasteful number, since it uses less digits than its factorization.

197451772880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426563 (or 426557 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 59.

The spelling of 197451772880 in words is "one hundred ninety-seven billion, four hundred fifty-one million, seven hundred seventy-two thousand, eight hundred eighty".