87726405705 has 32 divisors (see below), whose sum is σ = 146874915840. Its totient is φ = 44657879040.

The previous prime is 87726405703. The next prime is 87726405721. The reversal of 87726405705 is 50750462778.

It is not a de Polignac number, because 87726405705 - 2¹ = 87726405703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87726405703) 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, 1258240 + ... + 1326129.

It is an arithmetic number, because the mean of its divisors is an integer number (4589841120).

Almost surely, 2^87726405705 is an apocalyptic number.

It is an amenable number.

87726405705 is a deficient number, since it is larger than the sum of its proper divisors (59148510135).

87726405705 is a wasteful number, since it uses less digits than its factorization.

87726405705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584481.

The product of its (nonzero) digits is 3292800, while the sum is 51.

The spelling of 87726405705 in words is "eighty-seven billion, seven hundred twenty-six million, four hundred five thousand, seven hundred five".