61143700051 has 16 divisors (see below), whose sum is σ = 72143769600. Its totient is φ = 50710465440.

The previous prime is 61143700049. The next prime is 61143700067. The reversal of 61143700051 is 15000734116.

It is a cyclic number.

It is not a de Polignac number, because 61143700051 - 2¹ = 61143700049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61143699992 and 61143700019.

It is not an unprimeable number, because it can be changed into a prime (61143700091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1707210 + ... + 1742656.

It is an arithmetic number, because the mean of its divisors is an integer number (4508985600).

Almost surely, 2^61143700051 is an apocalyptic number.

61143700051 is a deficient number, since it is larger than the sum of its proper divisors (11000069549).

61143700051 is a wasteful number, since it uses less digits than its factorization.

61143700051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43434.

The product of its (nonzero) digits is 2520, while the sum is 28.

The spelling of 61143700051 in words is "sixty-one billion, one hundred forty-three million, seven hundred thousand, fifty-one".