61532746949 has 8 divisors (see below), whose sum is σ = 62341666560. Its totient is φ = 60724578096.

The previous prime is 61532746943. The next prime is 61532746973. The reversal of 61532746949 is 94964723516.

61532746949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61532746949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61532746894 and 61532746903.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 21734 + ... + 351479.

It is an arithmetic number, because the mean of its divisors is an integer number (7792708320).

Almost surely, 2^61532746949 is an apocalyptic number.

It is an amenable number.

61532746949 is a deficient number, since it is larger than the sum of its proper divisors (808919611).

61532746949 is a wasteful number, since it uses less digits than its factorization.

61532746949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375379.

The product of its digits is 9797760, while the sum is 56.

The spelling of 61532746949 in words is "sixty-one billion, five hundred thirty-two million, seven hundred forty-six thousand, nine hundred forty-nine".