151220564977 has 2 divisors, whose sum is σ = 151220564978. Its totient is φ = 151220564976.

The previous prime is 151220564969. The next prime is 151220565007. The reversal of 151220564977 is 779465022151.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92961570816 + 58258994161 = 304896^2 + 241369^2 .

It is a cyclic number.

It is not a de Polignac number, because 151220564977 - 2³ = 151220564969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 151220564977.

It is not a weakly prime, because it can be changed into another prime (151220564947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75610282488 + 75610282489.

It is an arithmetic number, because the mean of its divisors is an integer number (75610282489).

Almost surely, 2^151220564977 is an apocalyptic number.

It is an amenable number.

151220564977 is a deficient number, since it is larger than the sum of its proper divisors (1).

151220564977 is an equidigital number, since it uses as much as digits as its factorization.

151220564977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1058400, while the sum is 49.

The spelling of 151220564977 in words is "one hundred fifty-one billion, two hundred twenty million, five hundred sixty-four thousand, nine hundred seventy-seven".