151420542661 has 2 divisors, whose sum is σ = 151420542662.
Its totient is φ = 151420542660.
The previous prime is 151420542649. The next prime is 151420542677. The reversal of 151420542661 is 166245024151.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 146892060225 + 4528482436 = 383265^2 + 67294^2
It is a cyclic number.
It is not a de Polignac number, because 151420542661 - 217 = 151420411589 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 151420542661.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (151420542641) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75710271330 + 75710271331.
It is an arithmetic number, because the mean of its divisors is an integer number (75710271331).
Almost surely, 2151420542661 is an apocalyptic number.
It is an amenable number.
151420542661 is a deficient number, since it is larger than the sum of its proper divisors (1).
151420542661 is an equidigital number, since it uses as much as digits as its factorization.
151420542661 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 57600, while the sum is 37.
The spelling of 151420542661 in words is "one hundred fifty-one billion, four hundred twenty million, five hundred forty-two thousand, six hundred sixty-one".