2156661062 has 8 divisors (see below), whose sum is σ = 3235736592. Its totient is φ = 1078082200.

The previous prime is 2156661061. The next prime is 2156661097. The reversal of 2156661062 is 2601666512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156661061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113114 + ... + 130797.

It is an arithmetic number, because the mean of its divisors is an integer number (404467074).

Almost surely, 2^2156661062 is an apocalyptic number.

2156661062 is a deficient number, since it is larger than the sum of its proper divisors (1079075530).

2156661062 is a wasteful number, since it uses less digits than its factorization.

2156661062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248334.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 2156661062 is about 46439.8650084171. The cubic root of 2156661062 is about 1291.9944034973.

It can be divided in two parts, 21566 and 61062, that added together give a palindrome (82628).

The spelling of 2156661062 in words is "two billion, one hundred fifty-six million, six hundred sixty-one thousand, sixty-two".