61283540736 has 144 divisors (see below), whose sum is σ = 197701566720. Its totient is φ = 18570746880.

The previous prime is 61283540699. The next prime is 61283540753. The reversal of 61283540736 is 63704538216.

It is a tau number, because it is divible by the number of its divisors (144).

It is a junction number, because it is equal to n+sod(n) for n = 61283540691 and 61283540700.

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, 326980 + ... + 479043.

Almost surely, 2^61283540736 is an apocalyptic number.

61283540736 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

61283540736 is an abundant number, since it is smaller than the sum of its proper divisors (136418025984).

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

61283540736 is a wasteful number, since it uses less digits than its factorization.

61283540736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806059 (or 806039 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 61283540736 in words is "sixty-one billion, two hundred eighty-three million, five hundred forty thousand, seven hundred thirty-six".