120172262155 has 16 divisors (see below), whose sum is σ = 157345277184. Its totient is φ = 87381974880.

The previous prime is 120172262137. The next prime is 120172262159. The reversal of 120172262155 is 551262271021.

It is not a de Polignac number, because 120172262155 - 2¹³ = 120172253963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120172262155.

It is not an unprimeable number, because it can be changed into a prime (120172262159) 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, 106324 + ... + 501646.

It is an arithmetic number, because the mean of its divisors is an integer number (9834079824).

Almost surely, 2^120172262155 is an apocalyptic number.

120172262155 is a deficient number, since it is larger than the sum of its proper divisors (37173015029).

120172262155 is a wasteful number, since it uses less digits than its factorization.

120172262155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400866.

The product of its (nonzero) digits is 16800, while the sum is 34.

The spelling of 120172262155 in words is "one hundred twenty billion, one hundred seventy-two million, two hundred sixty-two thousand, one hundred fifty-five".