27951039550 has 96 divisors (see below), whose sum is σ = 61624180800. Its totient is φ = 9228764160.

The previous prime is 27951039539. The next prime is 27951039551. The reversal of 27951039550 is 5593015972.

It is a super-2 number, since 2×27951039550² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27951039550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27951039551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4147984 + ... + 4154716.

It is an arithmetic number, because the mean of its divisors is an integer number (641918550).

Almost surely, 2^27951039550 is an apocalyptic number.

27951039550 is an abundant number, since it is smaller than the sum of its proper divisors (33673141250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27951039550 is a wasteful number, since it uses less digits than its factorization.

27951039550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7190 (or 7185 counting only the distinct ones).

The product of its (nonzero) digits is 425250, while the sum is 46.

The spelling of 27951039550 in words is "twenty-seven billion, nine hundred fifty-one million, thirty-nine thousand, five hundred fifty".