61626042451 has 8 divisors (see below), whose sum is σ = 62641039824. Its totient is φ = 60611197920.

The previous prime is 61626042433. The next prime is 61626042479. The reversal of 61626042451 is 15424062616.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61626042451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61626042451.

It is not an unprimeable number, because it can be changed into a prime (61626042421) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1008981 + ... + 1068313.

It is an arithmetic number, because the mean of its divisors is an integer number (7830129978).

Almost surely, 2^61626042451 is an apocalyptic number.

61626042451 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

61626042451 is a deficient number, since it is larger than the sum of its proper divisors (1014997373).

61626042451 is a wasteful number, since it uses less digits than its factorization.

61626042451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76421.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 61626042451 in words is "sixty-one billion, six hundred twenty-six million, forty-two thousand, four hundred fifty-one".