61687457362 has 8 divisors (see below), whose sum is σ = 92532390156. Its totient is φ = 30843327312.

The previous prime is 61687457353. The next prime is 61687457401. The reversal of 61687457362 is 26375478616.

It can be written as a sum of positive squares in 2 ways, for example, as 58645824561 + 3041632801 = 242169^2 + 55151^2 .

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

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, 58248 + ... + 356044.

Almost surely, 2^61687457362 is an apocalyptic number.

61687457362 is a deficient number, since it is larger than the sum of its proper divisors (30844932794).

61687457362 is a wasteful number, since it uses less digits than its factorization.

61687457362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401372.

The product of its digits is 10160640, while the sum is 55.

The spelling of 61687457362 in words is "sixty-one billion, six hundred eighty-seven million, four hundred fifty-seven thousand, three hundred sixty-two".