197872529401 has 16 divisors (see below), whose sum is σ = 216792717840. Its totient is φ = 179764623360.

The previous prime is 197872529381. The next prime is 197872529423. The reversal of 197872529401 is 104925278791.

It can be written as a sum of positive squares in 8 ways, for example, as 132227001 + 197740302400 = 11499^2 + 444680^2 .

It is a cyclic number.

It is not a de Polignac number, because 197872529401 - 2⁷ = 197872529273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (197872529431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1932445 + ... + 2032261.

It is an arithmetic number, because the mean of its divisors is an integer number (13549544865).

Almost surely, 2^197872529401 is an apocalyptic number.

It is an amenable number.

197872529401 is a deficient number, since it is larger than the sum of its proper divisors (18920188439).

197872529401 is a wasteful number, since it uses less digits than its factorization.

197872529401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103884.

The product of its (nonzero) digits is 2540160, while the sum is 55.

The spelling of 197872529401 in words is "one hundred ninety-seven billion, eight hundred seventy-two million, five hundred twenty-nine thousand, four hundred one".