149773722172 has 12 divisors (see below), whose sum is σ = 273499840656. Its totient is φ = 71630910560.

The previous prime is 149773722157. The next prime is 149773722193. The reversal of 149773722172 is 271227377941.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813987529 + ... + 813987712.

It is an arithmetic number, because the mean of its divisors is an integer number (22791653388).

Almost surely, 2^149773722172 is an apocalyptic number.

It is an amenable number.

149773722172 is a deficient number, since it is larger than the sum of its proper divisors (123726118484).

149773722172 is a wasteful number, since it uses less digits than its factorization.

149773722172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627975268 (or 1627975266 counting only the distinct ones).

The product of its digits is 2074464, while the sum is 52.

The spelling of 149773722172 in words is "one hundred forty-nine billion, seven hundred seventy-three million, seven hundred twenty-two thousand, one hundred seventy-two".