61762272020 has 12 divisors (see below), whose sum is σ = 129700771284. Its totient is φ = 24704908800.

The previous prime is 61762272017. The next prime is 61762272023. The reversal of 61762272020 is 2027226716.

It is an interprime number because it is at equal distance from previous prime (61762272017) and next prime (61762272023).

It can be written as a sum of positive squares in 2 ways, for example, as 45078933124 + 16683338896 = 212318^2 + 129164^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61762272023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1544056781 + ... + 1544056820.

It is an arithmetic number, because the mean of its divisors is an integer number (10808397607).

Almost surely, 2^61762272020 is an apocalyptic number.

It is an amenable number.

61762272020 is an abundant number, since it is smaller than the sum of its proper divisors (67938499264).

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

61762272020 is a wasteful number, since it uses less digits than its factorization.

61762272020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088113610 (or 3088113608 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

Adding to 61762272020 its reverse (2027226716), we get a palindrome (63789498736).

The spelling of 61762272020 in words is "sixty-one billion, seven hundred sixty-two million, two hundred seventy-two thousand, twenty".