151810797121 has 4 divisors (see below), whose sum is σ = 151812868032. Its totient is φ = 151808726212.

The previous prime is 151810797101. The next prime is 151810797137. The reversal of 151810797121 is 121797018151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121797018151 = 179 ⋅680430269.

It is a cyclic number.

It is not a de Polignac number, because 151810797121 - 2³¹ = 149663313473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151810797101) 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, 921301 + ... + 1073506.

It is an arithmetic number, because the mean of its divisors is an integer number (37953217008).

Almost surely, 2^151810797121 is an apocalyptic number.

It is an amenable number.

151810797121 is a deficient number, since it is larger than the sum of its proper divisors (2070911).

151810797121 is an equidigital number, since it uses as much as digits as its factorization.

151810797121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070910.

The product of its (nonzero) digits is 35280, while the sum is 43.

The spelling of 151810797121 in words is "one hundred fifty-one billion, eight hundred ten million, seven hundred ninety-seven thousand, one hundred twenty-one".