2061961533 has 12 divisors (see below), whose sum is σ = 2979012348. Its totient is φ = 1374353280.

The previous prime is 2061961519. The next prime is 2061961547. The reversal of 2061961533 is 3351691602.

2061961533 is a `hidden beast` number, since 2 + 0 + 6 + 1 + 9 + 615 + 33 = 666.

It is an interprime number because it is at equal distance from previous prime (2061961519) and next prime (2061961547).

It can be written as a sum of positive squares in 2 ways, for example, as 1340877924 + 721083609 = 36618^2 + 26853^2 .

It is not a de Polignac number, because 2061961533 - 2¹⁸ = 2061699389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061961513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27141 + ... + 69717.

It is an arithmetic number, because the mean of its divisors is an integer number (248251029).

Almost surely, 2^2061961533 is an apocalyptic number.

It is an amenable number.

2061961533 is a deficient number, since it is larger than the sum of its proper divisors (917050815).

2061961533 is a wasteful number, since it uses less digits than its factorization.

2061961533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47964 (or 47961 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 2061961533 is about 45408.8265979204. The cubic root of 2061961533 is about 1272.8000577458.

The spelling of 2061961533 in words is "two billion, sixty-one million, nine hundred sixty-one thousand, five hundred thirty-three".