197655857070 has 32 divisors (see below), whose sum is σ = 542141779968. Its totient is φ = 45178481568.

The previous prime is 197655857053. The next prime is 197655857071. The reversal of 197655857070 is 70758556791.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 197655856995 and 197655857013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197655857071) 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, 470608974 + ... + 470609393.

It is an arithmetic number, because the mean of its divisors is an integer number (16941930624).

Almost surely, 2^197655857070 is an apocalyptic number.

197655857070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197655857070 is an abundant number, since it is smaller than the sum of its proper divisors (344485922898).

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

197655857070 is a wasteful number, since it uses less digits than its factorization.

197655857070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941218384.

The product of its (nonzero) digits is 18522000, while the sum is 60.

The spelling of 197655857070 in words is "one hundred ninety-seven billion, six hundred fifty-five million, eight hundred fifty-seven thousand, seventy".