27997519950 has 36 divisors (see below), whose sum is σ = 75220004808. Its totient is φ = 7466005200.

The previous prime is 27997519937. The next prime is 27997519969. The reversal of 27997519950 is 5991579972.

27997519950 is a `hidden beast` number, since 27 + 9 + 9 + 7 + 519 + 95 + 0 = 666.

It is a super-2 number, since 2×27997519950² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 31107906 + ... + 31108805.

It is an arithmetic number, because the mean of its divisors is an integer number (2089444578).

Almost surely, 2^27997519950 is an apocalyptic number.

27997519950 is an abundant number, since it is smaller than the sum of its proper divisors (47222484858).

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

27997519950 is a wasteful number, since it uses less digits than its factorization.

27997519950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62216729 (or 62216721 counting only the distinct ones).

The product of its (nonzero) digits is 16074450, while the sum is 63.

It can be divided in two parts, 279975 and 19950, that added together give a triangular number (299925 = T₇₇₄).

The spelling of 27997519950 in words is "twenty-seven billion, nine hundred ninety-seven million, five hundred nineteen thousand, nine hundred fifty".