6261087787881 has 32 divisors (see below), whose sum is σ = 8579301494400. Its totient is φ = 4059129016320.

The previous prime is 6261087787879. The next prime is 6261087787883. The reversal of 6261087787881 is 1887877801626.

It is an interprime number because it is at equal distance from previous prime (6261087787879) and next prime (6261087787883).

It is not a de Polignac number, because 6261087787881 - 2¹ = 6261087787879 is a prime.

It is a super-2 number, since 2×6261087787881² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6261087787883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182740330 + ... + 182774588.

It is an arithmetic number, because the mean of its divisors is an integer number (268103171700).

Almost surely, 2^{6261087787881} is an apocalyptic number.

It is an amenable number.

6261087787881 is a deficient number, since it is larger than the sum of its proper divisors (2318213706519).

6261087787881 is a wasteful number, since it uses less digits than its factorization.

6261087787881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39049.

The product of its (nonzero) digits is 101154816, while the sum is 69.

The spelling of 6261087787881 in words is "six trillion, two hundred sixty-one billion, eighty-seven million, seven hundred eighty-seven thousand, eight hundred eighty-one".