1045661771231 has 16 divisors (see below), whose sum is σ = 1315642606080. Its totient is φ = 807326131680.

The previous prime is 1045661771207. The next prime is 1045661771243. The reversal of 1045661771231 is 1321771665401.

It is a cyclic number.

It is not a de Polignac number, because 1045661771231 - 2³⁴ = 1028481902047 is a prime.

It is a super-2 number, since 2×1045661771231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045661771731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62285291 + ... + 62302076.

It is an arithmetic number, because the mean of its divisors is an integer number (82227662880).

Almost surely, 2^{1045661771231} is an apocalyptic number.

1045661771231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1045661771231 is a deficient number, since it is larger than the sum of its proper divisors (269980834849).

1045661771231 is a wasteful number, since it uses less digits than its factorization.

1045661771231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124587494.

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 1045661771231 in words is "one trillion, forty-five billion, six hundred sixty-one million, seven hundred seventy-one thousand, two hundred thirty-one".