157749605319081 has 8 divisors (see below), whose sum is σ = 211938401039904. Its totient is φ = 104363606572160.

The previous prime is 157749605319029. The next prime is 157749605319107. The reversal of 157749605319081 is 180913506947751.

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 157749605319081 - 2¹¹ = 157749605317033 is a prime.

It is a super-2 number, since 2×157749605319081² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157749605319181) 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, 200699243016 + ... + 200699243801.

It is an arithmetic number, because the mean of its divisors is an integer number (26492300129988).

Almost surely, 2^{157749605319081} is an apocalyptic number.

It is an amenable number.

157749605319081 is a deficient number, since it is larger than the sum of its proper divisors (54188795720823).

157749605319081 is a wasteful number, since it uses less digits than its factorization.

157749605319081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401398486951.

The product of its (nonzero) digits is 57153600, while the sum is 66.

The spelling of 157749605319081 in words is "one hundred fifty-seven trillion, seven hundred forty-nine billion, six hundred five million, three hundred nineteen thousand, eighty-one".