1061099378451 has 24 divisors (see below), whose sum is σ = 1752052789344. Its totient is φ = 606205192320.

The previous prime is 1061099378429. The next prime is 1061099378453. The reversal of 1061099378451 is 1548739901601.

1061099378451 is a `hidden beast` number, since 10 + 6 + 109 + 9 + 3 + 78 + 451 = 666.

It is not a de Polignac number, because 1061099378451 - 2¹⁰ = 1061099377427 is a prime.

It is a super-2 number, since 2×1061099378451² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1061099378453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1626346 + ... + 2183391.

It is an arithmetic number, because the mean of its divisors is an integer number (73002199556).

Almost surely, 2^{1061099378451} is an apocalyptic number.

1061099378451 is a deficient number, since it is larger than the sum of its proper divisors (690953410893).

1061099378451 is a wasteful number, since it uses less digits than its factorization.

1061099378451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3814171 (or 3814168 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The spelling of 1061099378451 in words is "one trillion, sixty-one billion, ninety-nine million, three hundred seventy-eight thousand, four hundred fifty-one".