2061451400 has 24 divisors (see below), whose sum is σ = 4792874970. Its totient is φ = 824580480.

The previous prime is 2061451397. The next prime is 2061451409. The reversal of 2061451400 is 41541602.

It can be written as a sum of positive squares in 3 ways, for example, as 1849516036 + 211935364 = 43006^2 + 14558^2 .

It is not an unprimeable number, because it can be changed into a prime (2061451409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5153429 + ... + 5153828.

Almost surely, 2^2061451400 is an apocalyptic number.

2061451400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2061451400 is an abundant number, since it is smaller than the sum of its proper divisors (2731423570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2061451400 is a wasteful number, since it uses less digits than its factorization.

2061451400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10307273 (or 10307264 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2061451400 is about 45403.2091376810. The cubic root of 2061451400 is about 1272.6950847456.

The spelling of 2061451400 in words is "two billion, sixty-one million, four hundred fifty-one thousand, four hundred".