151121520455 has 4 divisors (see below), whose sum is σ = 181345824552. Its totient is φ = 120897216360.

The previous prime is 151121520413. The next prime is 151121520457. The reversal of 151121520455 is 554025121151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 554025121151 = 37 ⋅14973651923.

It is not a de Polignac number, because 151121520455 - 2⁶ = 151121520391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151121520457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15112152041 + ... + 15112152050.

It is an arithmetic number, because the mean of its divisors is an integer number (45336456138).

Almost surely, 2^151121520455 is an apocalyptic number.

151121520455 is a deficient number, since it is larger than the sum of its proper divisors (30224304097).

151121520455 is an equidigital number, since it uses as much as digits as its factorization.

151121520455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30224304096.

The product of its (nonzero) digits is 10000, while the sum is 32.

The spelling of 151121520455 in words is "one hundred fifty-one billion, one hundred twenty-one million, five hundred twenty thousand, four hundred fifty-five".