151025776261 has 4 divisors (see below), whose sum is σ = 151062110892. Its totient is φ = 150989441632.

The previous prime is 151025776211. The next prime is 151025776267. The reversal of 151025776261 is 162677520151.

151025776261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 113265902500 + 37759873761 = 336550^2 + 194319^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151025776261 is a prime.

It is a super-2 number, since 2×151025776261² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151025776267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18161080 + ... + 18169393.

It is an arithmetic number, because the mean of its divisors is an integer number (37765527723).

Almost surely, 2^151025776261 is an apocalyptic number.

It is an amenable number.

151025776261 is a deficient number, since it is larger than the sum of its proper divisors (36334631).

151025776261 is an equidigital number, since it uses as much as digits as its factorization.

151025776261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36334630.

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 151025776261 in words is "one hundred fifty-one billion, twenty-five million, seven hundred seventy-six thousand, two hundred sixty-one".