61540046622 has 40 divisors (see below), whose sum is σ = 139444707600. Its totient is φ = 20282857056.

The previous prime is 61540046609. The next prime is 61540046639. The reversal of 61540046622 is 22664004516.

It is a super-2 number, since 2×61540046622² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 2119722 + ... + 2148557.

It is an arithmetic number, because the mean of its divisors is an integer number (3486117690).

Almost surely, 2^61540046622 is an apocalyptic number.

61540046622 is an abundant number, since it is smaller than the sum of its proper divisors (77904660978).

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

61540046622 is a wasteful number, since it uses less digits than its factorization.

61540046622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4268382 (or 4268373 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 61540046622 in words is "sixty-one billion, five hundred forty million, forty-six thousand, six hundred twenty-two".