61603949536 has 12 divisors (see below), whose sum is σ = 121282775712. Its totient is φ = 30801974752.

The previous prime is 61603949521. The next prime is 61603949551. The reversal of 61603949536 is 63594930616.

It is an interprime number because it is at equal distance from previous prime (61603949521) and next prime (61603949551).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 962561680 + ... + 962561743.

It is an arithmetic number, because the mean of its divisors is an integer number (10106897976).

Almost surely, 2^61603949536 is an apocalyptic number.

It is an amenable number.

61603949536 is a deficient number, since it is larger than the sum of its proper divisors (59678826176).

61603949536 is a wasteful number, since it uses less digits than its factorization.

61603949536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925123433 (or 1925123425 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 52.

The spelling of 61603949536 in words is "sixty-one billion, six hundred three million, nine hundred forty-nine thousand, five hundred thirty-six".