61650537542 has 32 divisors (see below), whose sum is σ = 105288401664. Its totient is φ = 26799616800.

The previous prime is 61650537511. The next prime is 61650537583. The reversal of 61650537542 is 24573505616.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 61650537493 and 61650537502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4517333 + ... + 4530959.

It is an arithmetic number, because the mean of its divisors is an integer number (3290262552).

Almost surely, 2^61650537542 is an apocalyptic number.

61650537542 is a deficient number, since it is larger than the sum of its proper divisors (43637864122).

61650537542 is a wasteful number, since it uses less digits than its factorization.

61650537542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22604.

The product of its (nonzero) digits is 756000, while the sum is 44.

The spelling of 61650537542 in words is "sixty-one billion, six hundred fifty million, five hundred thirty-seven thousand, five hundred forty-two".