61421162643 has 12 divisors (see below), whose sum is σ = 89110294728. Its totient is φ = 40767055200.

The previous prime is 61421162641. The next prime is 61421162669. The reversal of 61421162643 is 34626112416.

61421162643 is a `hidden beast` number, since 6 + 1 + 4 + 2 + 1 + 1 + 6 + 2 + 643 = 666.

61421162643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61421162643 - 2¹ = 61421162641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61421162598 and 61421162607.

It is not an unprimeable number, because it can be changed into a prime (61421162641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15030058 + ... + 15034143.

It is an arithmetic number, because the mean of its divisors is an integer number (7425857894).

Almost surely, 2^61421162643 is an apocalyptic number.

61421162643 is a deficient number, since it is larger than the sum of its proper divisors (27689132085).

61421162643 is a wasteful number, since it uses less digits than its factorization.

61421162643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30064434 (or 30064431 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The spelling of 61421162643 in words is "sixty-one billion, four hundred twenty-one million, one hundred sixty-two thousand, six hundred forty-three".