7874649805551 has 8 divisors (see below), whose sum is σ = 10783304238384. Its totient is φ = 5107880954880.

The previous prime is 7874649805481. The next prime is 7874649805559. The reversal of 7874649805551 is 1555089464787.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7874649805551 - 2¹⁹ = 7874649281263 is a prime.

It is a super-2 number, since 2×7874649805551² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7874649805559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35471395410 + ... + 35471395631.

It is an arithmetic number, because the mean of its divisors is an integer number (1347913029798).

Almost surely, 2^{7874649805551} is an apocalyptic number.

7874649805551 is a deficient number, since it is larger than the sum of its proper divisors (2908654432833).

7874649805551 is a wasteful number, since it uses less digits than its factorization.

7874649805551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70942791081.

The product of its (nonzero) digits is 338688000, while the sum is 69.

The spelling of 7874649805551 in words is "seven trillion, eight hundred seventy-four billion, six hundred forty-nine million, eight hundred five thousand, five hundred fifty-one".