151706725561 has 8 divisors (see below), whose sum is σ = 163263941064. Its totient is φ = 140442097920.

The previous prime is 151706725553. The next prime is 151706725567. The reversal of 151706725561 is 165527607151.

It can be written as a sum of positive squares in 4 ways, for example, as 12171605625 + 139535119936 = 110325^2 + 373544^2 .

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 151706725561 - 2³ = 151706725553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151706725567) 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, 73145890 + ... + 73147963.

It is an arithmetic number, because the mean of its divisors is an integer number (20407992633).

Almost surely, 2^151706725561 is an apocalyptic number.

It is an amenable number.

151706725561 is a deficient number, since it is larger than the sum of its proper divisors (11557215503).

151706725561 is a wasteful number, since it uses less digits than its factorization.

151706725561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146293931.

The product of its (nonzero) digits is 441000, while the sum is 46.

The spelling of 151706725561 in words is "one hundred fifty-one billion, seven hundred six million, seven hundred twenty-five thousand, five hundred sixty-one".