151215558881 has 2 divisors, whose sum is σ = 151215558882. Its totient is φ = 151215558880.

The previous prime is 151215558877. The next prime is 151215558917. The reversal of 151215558881 is 188855512151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149143488481 + 2072070400 = 386191^2 + 45520^2 .

It is a cyclic number.

It is not a de Polignac number, because 151215558881 - 2² = 151215558877 is a prime.

It is a super-2 number, since 2×151215558881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (151215558821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75607779440 + 75607779441.

It is an arithmetic number, because the mean of its divisors is an integer number (75607779441).

Almost surely, 2^151215558881 is an apocalyptic number.

It is an amenable number.

151215558881 is a deficient number, since it is larger than the sum of its proper divisors (1).

151215558881 is an equidigital number, since it uses as much as digits as its factorization.

151215558881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 640000, while the sum is 50.

The spelling of 151215558881 in words is "one hundred fifty-one billion, two hundred fifteen million, five hundred fifty-eight thousand, eight hundred eighty-one".