167980342621 has 32 divisors (see below), whose sum is σ = 211211255808. Its totient is φ = 130038194880.

The previous prime is 167980342619. The next prime is 167980342627. The reversal of 167980342621 is 126243089761.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 167980342621 - 2¹ = 167980342619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167980342627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26783716 + ... + 26789986.

It is an arithmetic number, because the mean of its divisors is an integer number (6600351744).

Almost surely, 2^167980342621 is an apocalyptic number.

It is an amenable number.

167980342621 is a deficient number, since it is larger than the sum of its proper divisors (43230913187).

167980342621 is a wasteful number, since it uses less digits than its factorization.

167980342621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12601.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 167980342621 in words is "one hundred sixty-seven billion, nine hundred eighty million, three hundred forty-two thousand, six hundred twenty-one".