61227436032 has 240 divisors, whose sum is σ = 209011682880. Its totient is φ = 17493221376.

The previous prime is 61227436019. The next prime is 61227436037. The reversal of 61227436032 is 23063472216.

61227436032 is a `hidden beast` number, since 6 + 1 + 2 + 2 + 7 + 43 + 603 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (61227436037) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1134853 + ... + 1187579.

It is an arithmetic number, because the mean of its divisors is an integer number (870882012).

Almost surely, 2^61227436032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61227436032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104505841440).

61227436032 is an abundant number, since it is smaller than the sum of its proper divisors (147784246848).

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

61227436032 is an equidigital number, since it uses as much as digits as its factorization.

61227436032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52768 (or 52739 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

It can be divided in two parts, 612 and 27436032, that added together give a square (27436644 = 5238²).

The spelling of 61227436032 in words is "sixty-one billion, two hundred twenty-seven million, four hundred thirty-six thousand, thirty-two".