151808411572261 has 2 divisors, whose sum is σ = 151808411572262. Its totient is φ = 151808411572260.

The previous prime is 151808411572253. The next prime is 151808411572303. The reversal of 151808411572261 is 162275114808151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104962463324161 + 46845948248100 = 10245119^2 + 6844410^2 .

It is a cyclic number.

It is not a de Polignac number, because 151808411572261 - 2³ = 151808411572253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 151808411572199 and 151808411572208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151808411872261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75904205786130 + 75904205786131.

It is an arithmetic number, because the mean of its divisors is an integer number (75904205786131).

Almost surely, 2^{151808411572261} is an apocalyptic number.

It is an amenable number.

151808411572261 is a deficient number, since it is larger than the sum of its proper divisors (1).

151808411572261 is an equidigital number, since it uses as much as digits as its factorization.

151808411572261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1075200, while the sum is 52.

The spelling of 151808411572261 in words is "one hundred fifty-one trillion, eight hundred eight billion, four hundred eleven million, five hundred seventy-two thousand, two hundred sixty-one".