61287337743892 has 12 divisors (see below), whose sum is σ = 115503059594356. Its totient is φ = 28286463574080.

The previous prime is 61287337743887. The next prime is 61287337743923. The reversal of 61287337743892 is 29834773378216.

It can be written as a sum of positive squares in 2 ways, for example, as 7906691629456 + 53380646114436 = 2811884^2 + 7306206^2 .

It is a super-2 number, since 2×61287337743892² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589301324409 + ... + 589301324512.

Almost surely, 2^{61287337743892} is an apocalyptic number.

It is an amenable number.

61287337743892 is a deficient number, since it is larger than the sum of its proper divisors (54215721850464).

61287337743892 is a wasteful number, since it uses less digits than its factorization.

61287337743892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178602648938 (or 1178602648936 counting only the distinct ones).

The product of its digits is 512096256, while the sum is 70.

The spelling of 61287337743892 in words is "sixty-one trillion, two hundred eighty-seven billion, three hundred thirty-seven million, seven hundred forty-three thousand, eight hundred ninety-two".