1901172213375 has 32 divisors (see below), whose sum is σ = 3230860179456. Its totient is φ = 992384919200.

The previous prime is 1901172213371. The next prime is 1901172213407. The reversal of 1901172213375 is 5733122711091.

It is not a de Polignac number, because 1901172213375 - 2² = 1901172213371 is a prime.

It is a super-2 number, since 2×1901172213375² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1901172213371) 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, 53916339 + ... + 53951588.

It is an arithmetic number, because the mean of its divisors is an integer number (100964380608).

Almost surely, 2^{1901172213375} is an apocalyptic number.

1901172213375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1901172213375 is a deficient number, since it is larger than the sum of its proper divisors (1329687966081).

1901172213375 is a wasteful number, since it uses less digits than its factorization.

1901172213375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107867992 (or 107867982 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 42.

The spelling of 1901172213375 in words is "one trillion, nine hundred one billion, one hundred seventy-two million, two hundred thirteen thousand, three hundred seventy-five".