197511157552 has 20 divisors (see below), whose sum is σ = 384815738520. Its totient is φ = 98203870208.

The previous prime is 197511157549. The next prime is 197511157633. The reversal of 197511157552 is 255751115791.

It is a junction number, because it is equal to n+sod(n) for n = 197511157496 and 197511157505.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34478833 + ... + 34484560.

It is an arithmetic number, because the mean of its divisors is an integer number (19240786926).

Almost surely, 2^197511157552 is an apocalyptic number.

It is an amenable number.

197511157552 is a deficient number, since it is larger than the sum of its proper divisors (187304580968).

197511157552 is a wasteful number, since it uses less digits than its factorization.

197511157552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68963580 (or 68963574 counting only the distinct ones).

The product of its digits is 551250, while the sum is 49.

The spelling of 197511157552 in words is "one hundred ninety-seven billion, five hundred eleven million, one hundred fifty-seven thousand, five hundred fifty-two".