2151630673919 has 4 divisors (see below), whose sum is σ = 2153339674920. Its totient is φ = 2149921672920.

The previous prime is 2151630673903. The next prime is 2151630673937. The reversal of 2151630673919 is 9193760361512.

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

It is a cyclic number.

It is not a de Polignac number, because 2151630673919 - 2⁴ = 2151630673903 is a prime.

It is a super-2 number, since 2×2151630673919² (a number of 25 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 (2151630673019) 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, 854498612 + ... + 854501129.

It is an arithmetic number, because the mean of its divisors is an integer number (538334918730).

Almost surely, 2^{2151630673919} is an apocalyptic number.

2151630673919 is a deficient number, since it is larger than the sum of its proper divisors (1709001001).

2151630673919 is a wasteful number, since it uses less digits than its factorization.

2151630673919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709001000.

The product of its (nonzero) digits is 1837080, while the sum is 53.

The spelling of 2151630673919 in words is "two trillion, one hundred fifty-one billion, six hundred thirty million, six hundred seventy-three thousand, nine hundred nineteen".