157661206626576 has 40 divisors (see below), whose sum is σ = 428727842583520. Its totient is φ = 49787749460736.

The previous prime is 157661206626571. The next prime is 157661206626577. The reversal of 157661206626576 is 675626602166751.

It is not an unprimeable number, because it can be changed into a prime (157661206626571) 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, 86437064125 + ... + 86437065948.

It is an arithmetic number, because the mean of its divisors is an integer number (10718196064588).

Almost surely, 2^{157661206626576} is an apocalyptic number.

157661206626576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

157661206626576 is an abundant number, since it is smaller than the sum of its proper divisors (271066635956944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157661206626576 is a wasteful number, since it uses less digits than its factorization.

157661206626576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172874130103 (or 172874130097 counting only the distinct ones).

The product of its (nonzero) digits is 228614400, while the sum is 66.

The spelling of 157661206626576 in words is "one hundred fifty-seven trillion, six hundred sixty-one billion, two hundred six million, six hundred twenty-six thousand, five hundred seventy-six".