61209041740 has 96 divisors (see below), whose sum is σ = 163280323584. Its totient is φ = 18718152960.

The previous prime is 61209041657. The next prime is 61209041749. The reversal of 61209041740 is 4714090216.

61209041740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61209041696 and 61209041705.

It is not an unprimeable number, because it can be changed into a prime (61209041749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 293344 + ... + 456583.

It is an arithmetic number, because the mean of its divisors is an integer number (1700836704).

Almost surely, 2^61209041740 is an apocalyptic number.

It is an amenable number.

61209041740 is an abundant number, since it is smaller than the sum of its proper divisors (102071281844).

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

61209041740 is a wasteful number, since it uses less digits than its factorization.

61209041740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750007 (or 750005 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 61209041740 in words is "sixty-one billion, two hundred nine million, forty-one thousand, seven hundred forty".