39987277278993 has 12 divisors (see below), whose sum is σ = 63010255106448. Its totient is φ = 24234713502360.

The previous prime is 39987277278973. The next prime is 39987277278997.

39987277278993 is a `hidden beast` number, since 39 + 98 + 72 + 77 + 278 + 9 + 93 = 666.

39987277278993 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 39987277278993 - 2²⁹ = 39986740408081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39987277278997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201955945755 + ... + 201955945952.

It is an arithmetic number, because the mean of its divisors is an integer number (5250854592204).

Almost surely, 2^{39987277278993} is an apocalyptic number.

39987277278993 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

39987277278993 is a deficient number, since it is larger than the sum of its proper divisors (23022977827455).

39987277278993 is a wasteful number, since it uses less digits than its factorization.

39987277278993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403911891724 (or 403911891721 counting only the distinct ones).

The product of its digits is 36294822144, while the sum is 90.

The spelling of 39987277278993 in words is "thirty-nine trillion, nine hundred eighty-seven billion, two hundred seventy-seven million, two hundred seventy-eight thousand, nine hundred ninety-three".