61344202540 has 24 divisors (see below), whose sum is σ = 132304524912. Its totient is φ = 23874500160.

The previous prime is 61344202529. The next prime is 61344202561. The reversal of 61344202540 is 4520244316.

61344202540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61344202540² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41448046 + ... + 41449525.

It is an arithmetic number, because the mean of its divisors is an integer number (5512688538).

Almost surely, 2^61344202540 is an apocalyptic number.

It is an amenable number.

61344202540 is an abundant number, since it is smaller than the sum of its proper divisors (70960322372).

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

61344202540 is a wasteful number, since it uses less digits than its factorization.

61344202540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82897617 (or 82897615 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 61344202540 its reverse (4520244316), we get a palindrome (65864446856).

The spelling of 61344202540 in words is "sixty-one billion, three hundred forty-four million, two hundred two thousand, five hundred forty".