172620157678014 has 32 divisors (see below), whose sum is σ = 345440750215680. Its totient is φ = 57506648028192.

The previous prime is 172620157678013. The next prime is 172620157678039. The reversal of 172620157678014 is 410876751026271.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172620157678013) 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, 678093847 + ... + 678348365.

It is an arithmetic number, because the mean of its divisors is an integer number (10795023444240).

Almost surely, 2^{172620157678014} is an apocalyptic number.

172620157678014 is an abundant number, since it is smaller than the sum of its proper divisors (172820592537666).

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

172620157678014 is a wasteful number, since it uses less digits than its factorization.

172620157678014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319704.

The product of its (nonzero) digits is 7902720, while the sum is 57.

The spelling of 172620157678014 in words is "one hundred seventy-two trillion, six hundred twenty billion, one hundred fifty-seven million, six hundred seventy-eight thousand, fourteen".