1081717091451 has 24 divisors (see below), whose sum is σ = 1584213356544. Its totient is φ = 711182067120.

The previous prime is 1081717091437. The next prime is 1081717091459. The reversal of 1081717091451 is 1541907171801.

1081717091451 is a `hidden beast` number, since 10 + 8 + 17 + 170 + 9 + 1 + 451 = 666.

It is not a de Polignac number, because 1081717091451 - 2²² = 1081712897147 is a prime.

It is a super-2 number, since 2×1081717091451² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1081717091397 and 1081717091406.

It is not an unprimeable number, because it can be changed into a prime (1081717091459) 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, 2642605 + ... + 3024366.

It is an arithmetic number, because the mean of its divisors is an integer number (66008889856).

Almost surely, 2^{1081717091451} is an apocalyptic number.

1081717091451 is a deficient number, since it is larger than the sum of its proper divisors (502496265093).

1081717091451 is a wasteful number, since it uses less digits than its factorization.

1081717091451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5667271 (or 5667268 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 45.

The spelling of 1081717091451 in words is "one trillion, eighty-one billion, seven hundred seventeen million, ninety-one thousand, four hundred fifty-one".