61940280506 has 12 divisors (see below), whose sum is σ = 100059426222. Its totient is φ = 28587236064.

The previous prime is 61940280499. The next prime is 61940280559. The reversal of 61940280506 is 60508204916.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 33652068025 + 28288212481 = 183445^2 + 168191^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1244630 + ... + 1293438.

Almost surely, 2^61940280506 is an apocalyptic number.

61940280506 is a deficient number, since it is larger than the sum of its proper divisors (38119145716).

61940280506 is an frugal number, since it uses more digits than its factorization.

61940280506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97633 (or 48824 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 61940280506 in words is "sixty-one billion, nine hundred forty million, two hundred eighty thousand, five hundred six".