61212620435 has 16 divisors (see below), whose sum is σ = 79987456800. Its totient is φ = 44792971776.

The previous prime is 61212620407. The next prime is 61212620503. The reversal of 61212620435 is 53402621216.

It is a cyclic number.

It is not a de Polignac number, because 61212620435 - 2³² = 56917653139 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11106614 + ... + 11112123.

It is an arithmetic number, because the mean of its divisors is an integer number (4999216050).

Almost surely, 2^61212620435 is an apocalyptic number.

61212620435 is a deficient number, since it is larger than the sum of its proper divisors (18774836365).

61212620435 is a wasteful number, since it uses less digits than its factorization.

61212620435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22218790.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 61212620435 in words is "sixty-one billion, two hundred twelve million, six hundred twenty thousand, four hundred thirty-five".