2007961855991 has 8 divisors (see below), whose sum is σ = 2471337669024. Its totient is φ = 1588717072800.

The previous prime is 2007961855979. The next prime is 2007961856009. The reversal of 2007961855991 is 1995581697002.

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

It is not a de Polignac number, because 2007961855991 - 2²² = 2007957661687 is a prime.

It is a super-2 number, since 2×2007961855991² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2007961855951) 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, 11032757360 + ... + 11032757541.

It is an arithmetic number, because the mean of its divisors is an integer number (308917208628).

Almost surely, 2^{2007961855991} is an apocalyptic number.

2007961855991 is a deficient number, since it is larger than the sum of its proper divisors (463375813033).

2007961855991 is a wasteful number, since it uses less digits than its factorization.

2007961855991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22065514921.

The product of its (nonzero) digits is 12247200, while the sum is 62.

The spelling of 2007961855991 in words is "two trillion, seven billion, nine hundred sixty-one million, eight hundred fifty-five thousand, nine hundred ninety-one".