1557750612231 has 12 divisors (see below), whose sum is σ = 2454637328520. Its totient is φ = 944091280080.

The previous prime is 1557750612221. The next prime is 1557750612283. The reversal of 1557750612231 is 1322160577551.

1557750612231 is a `hidden beast` number, since 1 + 5 + 5 + 7 + 7 + 5 + 0 + 612 + 23 + 1 = 666.

It is not a de Polignac number, because 1557750612231 - 2¹¹ = 1557750610183 is a prime.

It is a super-2 number, since 2×1557750612231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557750612221) 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, 7867427236 + ... + 7867427433.

It is an arithmetic number, because the mean of its divisors is an integer number (204553110710).

Almost surely, 2^{1557750612231} is an apocalyptic number.

1557750612231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1557750612231 is a deficient number, since it is larger than the sum of its proper divisors (896886716289).

1557750612231 is a wasteful number, since it uses less digits than its factorization.

1557750612231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15734854686 (or 15734854683 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 45.

The spelling of 1557750612231 in words is "one trillion, five hundred fifty-seven billion, seven hundred fifty million, six hundred twelve thousand, two hundred thirty-one".