154740193772 has 18 divisors (see below), whose sum is σ = 274070628468. Its totient is φ = 76434386448.

The previous prime is 154740193703. The next prime is 154740193789. The reversal of 154740193772 is 277391047451.

It is a super-2 number, since 2×154740193772² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 154740193772.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7156754 + ... + 7178342.

It is an arithmetic number, because the mean of its divisors is an integer number (15226146026).

Almost surely, 2^154740193772 is an apocalyptic number.

It is an amenable number.

154740193772 is a deficient number, since it is larger than the sum of its proper divisors (119330434696).

154740193772 is an frugal number, since it uses more digits than its factorization.

154740193772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43265 (or 21674 counting only the distinct ones).

The product of its (nonzero) digits is 1481760, while the sum is 50.

The spelling of 154740193772 in words is "one hundred fifty-four billion, seven hundred forty million, one hundred ninety-three thousand, seven hundred seventy-two".