61262632240 has 80 divisors (see below), whose sum is σ = 147406949280. Its totient is φ = 23650457600.

The previous prime is 61262632183. The next prime is 61262632243. The reversal of 61262632240 is 4223626216.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×61262632240² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61262632196 and 61262632205.

It is not an unprimeable number, because it can be changed into a prime (61262632243) 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, 8930892 + ... + 8937748.

It is an arithmetic number, because the mean of its divisors is an integer number (1842586866).

Almost surely, 2^61262632240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61262632240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73703474640).

61262632240 is an abundant number, since it is smaller than the sum of its proper divisors (86144317040).

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

61262632240 is a wasteful number, since it uses less digits than its factorization.

61262632240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10750 (or 10744 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The spelling of 61262632240 in words is "sixty-one billion, two hundred sixty-two million, six hundred thirty-two thousand, two hundred forty".