61532746947 has 24 divisors (see below), whose sum is σ = 101870635776. Its totient is φ = 35060227056.

The previous prime is 61532746943. The next prime is 61532746973. The reversal of 61532746947 is 74964723516.

61532746947 is a `hidden beast` number, since 6 + 1 + 532 + 7 + 4 + 69 + 47 = 666.

61532746947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61532746947 - 2² = 61532746943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61532746893 and 61532746902.

It is not an unprimeable number, because it can be changed into a prime (61532746943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1385503 + ... + 1429224.

It is an arithmetic number, because the mean of its divisors is an integer number (4244609824).

Almost surely, 2^61532746947 is an apocalyptic number.

61532746947 is a deficient number, since it is larger than the sum of its proper divisors (40337888829).

61532746947 is a wasteful number, since it uses less digits than its factorization.

61532746947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2815087 (or 2815084 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 54.

The spelling of 61532746947 in words is "sixty-one billion, five hundred thirty-two million, seven hundred forty-six thousand, nine hundred forty-seven".