156228280997 has 8 divisors (see below), whose sum is σ = 157382784000. Its totient is φ = 155075191504.

The previous prime is 156228280993. The next prime is 156228281009. The reversal of 156228280997 is 799082822651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 156228280997 - 2² = 156228280993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156228280993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130997 + ... + 574122.

It is an arithmetic number, because the mean of its divisors is an integer number (19672848000).

Almost surely, 2^156228280997 is an apocalyptic number.

It is an amenable number.

156228280997 is a deficient number, since it is larger than the sum of its proper divisors (1154503003).

156228280997 is a wasteful number, since it uses less digits than its factorization.

156228280997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706755.

The product of its (nonzero) digits is 8709120, while the sum is 59.

The spelling of 156228280997 in words is "one hundred fifty-six billion, two hundred twenty-eight million, two hundred eighty thousand, nine hundred ninety-seven".