461561737240 has 32 divisors (see below), whose sum is σ = 1046441507760. Its totient is φ = 183215344000.

The previous prime is 461561737223. The next prime is 461561737243. The reversal of 461561737240 is 42737165164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461561737243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44036911 + ... + 44047390.

Almost surely, 2^461561737240 is an apocalyptic number.

461561737240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

461561737240 is an abundant number, since it is smaller than the sum of its proper divisors (584879770520).

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

461561737240 is a wasteful number, since it uses less digits than its factorization.

461561737240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88084443 (or 88084439 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 461561737240 in words is "four hundred sixty-one billion, five hundred sixty-one million, seven hundred thirty-seven thousand, two hundred forty".