157645623705 has 8 divisors (see below), whose sum is σ = 252232997952. Its totient is φ = 84077665968.

The previous prime is 157645623701. The next prime is 157645623713. The reversal of 157645623705 is 507326546751.

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

It is not a de Polignac number, because 157645623705 - 2² = 157645623701 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (157645623701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5254854109 + ... + 5254854138.

It is an arithmetic number, because the mean of its divisors is an integer number (31529124744).

Almost surely, 2^157645623705 is an apocalyptic number.

157645623705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157645623705 is a deficient number, since it is larger than the sum of its proper divisors (94587374247).

157645623705 is a wasteful number, since it uses less digits than its factorization.

157645623705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10509708255.

The product of its (nonzero) digits is 5292000, while the sum is 51.

The spelling of 157645623705 in words is "one hundred fifty-seven billion, six hundred forty-five million, six hundred twenty-three thousand, seven hundred five".