158757241821 has 16 divisors (see below), whose sum is σ = 223107125760. Its totient is φ = 100260480320.

The previous prime is 158757241787. The next prime is 158757241823. The reversal of 158757241821 is 128142757851.

It is a cyclic number.

It is not a de Polignac number, because 158757241821 - 2¹³ = 158757233629 is a prime.

It is a super-2 number, since 2×158757241821² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158757241823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17210445 + ... + 17219666.

It is an arithmetic number, because the mean of its divisors is an integer number (13944195360).

Almost surely, 2^158757241821 is an apocalyptic number.

It is an amenable number.

158757241821 is a deficient number, since it is larger than the sum of its proper divisors (64349883939).

158757241821 is a wasteful number, since it uses less digits than its factorization.

158757241821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34430196.

The product of its digits is 1254400, while the sum is 51.

The spelling of 158757241821 in words is "one hundred fifty-eight billion, seven hundred fifty-seven million, two hundred forty-one thousand, eight hundred twenty-one".