61527388040 has 32 divisors (see below), whose sum is σ = 146579955480. Its totient is φ = 23163251712.

The previous prime is 61527388037. The next prime is 61527388051. The reversal of 61527388040 is 4088372516.

61527388040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 60907278436 + 620109604 = 246794^2 + 24902^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61527387982 and 61527388000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45240047 + ... + 45241406.

Almost surely, 2^61527388040 is an apocalyptic number.

It is an amenable number.

61527388040 is an abundant number, since it is smaller than the sum of its proper divisors (85052567440).

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

61527388040 is a wasteful number, since it uses less digits than its factorization.

61527388040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90481481 (or 90481477 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 61527388040 in words is "sixty-one billion, five hundred twenty-seven million, three hundred eighty-eight thousand, forty".