61603753442 has 24 divisors (see below), whose sum is σ = 117264289680. Its totient is φ = 24001461960.

The previous prime is 61603753399. The next prime is 61603753457. The reversal of 61603753442 is 24435730616.

It is a super-3 number, since 3×61603753442³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61603753442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28572092 + ... + 28574247.

It is an arithmetic number, because the mean of its divisors is an integer number (4886012070).

Almost surely, 2^61603753442 is an apocalyptic number.

61603753442 is a deficient number, since it is larger than the sum of its proper divisors (55660536238).

61603753442 is a wasteful number, since it uses less digits than its factorization.

61603753442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57146366 (or 57146359 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 41.

The spelling of 61603753442 in words is "sixty-one billion, six hundred three million, seven hundred fifty-three thousand, four hundred forty-two".