67261005987 has 8 divisors (see below), whose sum is σ = 102492961536. Its totient is φ = 38434860552.

The previous prime is 67261005983. The next prime is 67261005991. The reversal of 67261005987 is 78950016276.

It is an interprime number because it is at equal distance from previous prime (67261005983) and next prime (67261005991).

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

It is not a de Polignac number, because 67261005987 - 2² = 67261005983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67261005983) 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, 1601452503 + ... + 1601452544.

It is an arithmetic number, because the mean of its divisors is an integer number (12811620192).

Almost surely, 2^67261005987 is an apocalyptic number.

67261005987 is a deficient number, since it is larger than the sum of its proper divisors (35231955549).

67261005987 is a wasteful number, since it uses less digits than its factorization.

67261005987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3202905057.

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 67261005987 in words is "sixty-seven billion, two hundred sixty-one million, five thousand, nine hundred eighty-seven".