61504473493 has 12 divisors (see below), whose sum is σ = 63091852992. Its totient is φ = 59955503000.

The previous prime is 61504473473. The next prime is 61504473497. The reversal of 61504473493 is 39437440516.

It is a de Polignac number, because none of the positive numbers 2^k-61504473493 is a prime.

It is a super-2 number, since 2×61504473493² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61504473497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 498996 + ... + 609922.

It is an arithmetic number, because the mean of its divisors is an integer number (5257654416).

Almost surely, 2^61504473493 is an apocalyptic number.

It is an amenable number.

61504473493 is a deficient number, since it is larger than the sum of its proper divisors (1587379499).

61504473493 is a wasteful number, since it uses less digits than its factorization.

61504473493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111272 (or 111225 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 61504473493 in words is "sixty-one billion, five hundred four million, four hundred seventy-three thousand, four hundred ninety-three".