157224666945 has 16 divisors (see below), whose sum is σ = 251647585920. Its totient is φ = 83823782784.

The previous prime is 157224666941. The next prime is 157224666947. The reversal of 157224666945 is 549666422751.

It is a happy number.

It is not a de Polignac number, because 157224666945 - 2² = 157224666941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157224666941) 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, 1791525 + ... + 1877234.

It is an arithmetic number, because the mean of its divisors is an integer number (15727974120).

Almost surely, 2^157224666945 is an apocalyptic number.

157224666945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157224666945 is a deficient number, since it is larger than the sum of its proper divisors (94422918975).

157224666945 is a wasteful number, since it uses less digits than its factorization.

157224666945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3671624.

The product of its digits is 21772800, while the sum is 57.

The spelling of 157224666945 in words is "one hundred fifty-seven billion, two hundred twenty-four million, six hundred sixty-six thousand, nine hundred forty-five".