151439018791 has 4 divisors (see below), whose sum is σ = 151888393072. Its totient is φ = 150989644512.

The previous prime is 151439018777. The next prime is 151439018849. The reversal of 151439018791 is 197810934151.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151439018791 is a prime.

It is a super-2 number, since 2×151439018791² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151439018191) 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, 224686635 + ... + 224687308.

It is an arithmetic number, because the mean of its divisors is an integer number (37972098268).

Almost surely, 2^151439018791 is an apocalyptic number.

151439018791 is a deficient number, since it is larger than the sum of its proper divisors (449374281).

151439018791 is an equidigital number, since it uses as much as digits as its factorization.

151439018791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449374280.

The product of its (nonzero) digits is 272160, while the sum is 49.

The spelling of 151439018791 in words is "one hundred fifty-one billion, four hundred thirty-nine million, eighteen thousand, seven hundred ninety-one".