86990071761 has 24 divisors (see below), whose sum is σ = 126835800000. Its totient is φ = 57449712672.

The previous prime is 86990071723. The next prime is 86990071801. The reversal of 86990071761 is 16717009968.

It is not a de Polignac number, because 86990071761 - 2⁹ = 86990071249 is a prime.

It is a super-2 number, since 2×86990071761² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86990071698 and 86990071707.

It is not an unprimeable number, because it can be changed into a prime (86990071061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 304090 + ... + 516188.

It is an arithmetic number, because the mean of its divisors is an integer number (5284825000).

Almost surely, 2^86990071761 is an apocalyptic number.

It is an amenable number.

86990071761 is a deficient number, since it is larger than the sum of its proper divisors (39845728239).

86990071761 is a wasteful number, since it uses less digits than its factorization.

86990071761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212533 (or 212530 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 54.

The spelling of 86990071761 in words is "eighty-six billion, nine hundred ninety million, seventy-one thousand, seven hundred sixty-one".