61022540039 has 2 divisors, whose sum is σ = 61022540040. Its totient is φ = 61022540038.

The previous prime is 61022540011. The next prime is 61022540083. The reversal of 61022540039 is 93004522016.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61022540039 - 2¹⁶ = 61022474503 is a prime.

It is a super-2 number, since 2×61022540039² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61022539987 and 61022540014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61022530039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30511270019 + 30511270020.

It is an arithmetic number, because the mean of its divisors is an integer number (30511270020).

Almost surely, 2^61022540039 is an apocalyptic number.

61022540039 is a deficient number, since it is larger than the sum of its proper divisors (1).

61022540039 is an equidigital number, since it uses as much as digits as its factorization.

61022540039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 61022540039 in words is "sixty-one billion, twenty-two million, five hundred forty thousand, thirty-nine".