151153307721 has 48 divisors (see below), whose sum is σ = 241717104720. Its totient is φ = 90415388160.

The previous prime is 151153307719. The next prime is 151153307749. The reversal of 151153307721 is 127703351151.

151153307721 is a `hidden beast` number, since 1 + 51 + 1 + 533 + 0 + 7 + 72 + 1 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 14194101321 + 136959206400 = 119139^2 + 370080^2 .

It is not a de Polignac number, because 151153307721 - 2¹ = 151153307719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (151153307021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4576615 + ... + 4609523.

It is an arithmetic number, because the mean of its divisors is an integer number (5035773015).

Almost surely, 2^151153307721 is an apocalyptic number.

It is an amenable number.

151153307721 is a deficient number, since it is larger than the sum of its proper divisors (90563796999).

151153307721 is a wasteful number, since it uses less digits than its factorization.

151153307721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34026 (or 34023 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 36.

Adding to 151153307721 its reverse (127703351151), we get a palindrome (278856658872).

The spelling of 151153307721 in words is "one hundred fifty-one billion, one hundred fifty-three million, three hundred seven thousand, seven hundred twenty-one".