157730335731 has 12 divisors (see below), whose sum is σ = 241234631352. Its totient is φ = 98968053696.

The previous prime is 157730335691. The next prime is 157730335747. The reversal of 157730335731 is 137533037751.

157730335731 is a `hidden beast` number, since 1 + 5 + 7 + 73 + 0 + 3 + 3 + 573 + 1 = 666.

It is not a de Polignac number, because 157730335731 - 2⁷ = 157730335603 is a prime.

It is a super-2 number, since 2×157730335731² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157730335751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 515458461 + ... + 515458766.

It is an arithmetic number, because the mean of its divisors is an integer number (20102885946).

Almost surely, 2^157730335731 is an apocalyptic number.

157730335731 is a deficient number, since it is larger than the sum of its proper divisors (83504295621).

157730335731 is a wasteful number, since it uses less digits than its factorization.

157730335731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030917250 (or 1030917247 counting only the distinct ones).

The product of its (nonzero) digits is 694575, while the sum is 45.

The spelling of 157730335731 in words is "one hundred fifty-seven billion, seven hundred thirty million, three hundred thirty-five thousand, seven hundred thirty-one".