157220661559 has 16 divisors (see below), whose sum is σ = 178243340800. Its totient is φ = 137475022176.

The previous prime is 157220661557. The next prime is 157220661599. The reversal of 157220661559 is 955166022751.

157220661559 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 157220661559 - 2¹ = 157220661557 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 (157220661557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3142462 + ... + 3192100.

It is an arithmetic number, because the mean of its divisors is an integer number (11140208800).

Almost surely, 2^157220661559 is an apocalyptic number.

157220661559 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

157220661559 is a deficient number, since it is larger than the sum of its proper divisors (21022679241).

157220661559 is a wasteful number, since it uses less digits than its factorization.

157220661559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62494.

The product of its (nonzero) digits is 1134000, while the sum is 49.

The spelling of 157220661559 in words is "one hundred fifty-seven billion, two hundred twenty million, six hundred sixty-one thousand, five hundred fifty-nine".