61860228973 has 2 divisors, whose sum is σ = 61860228974. Its totient is φ = 61860228972.

The previous prime is 61860228877. The next prime is 61860229019. The reversal of 61860228973 is 37982206816.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43025960329 + 18834268644 = 207427^2 + 137238^2 .

It is a cyclic number.

It is not a de Polignac number, because 61860228973 - 2²⁵ = 61826674541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61860228973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61860226973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30930114486 + 30930114487.

It is an arithmetic number, because the mean of its divisors is an integer number (30930114487).

Almost surely, 2^61860228973 is an apocalyptic number.

It is an amenable number.

61860228973 is a deficient number, since it is larger than the sum of its proper divisors (1).

61860228973 is an equidigital number, since it uses as much as digits as its factorization.

61860228973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 61860228973 in words is "sixty-one billion, eight hundred sixty million, two hundred twenty-eight thousand, nine hundred seventy-three".