67220401531 has 2 divisors, whose sum is σ = 67220401532. Its totient is φ = 67220401530.

The previous prime is 67220401487. The next prime is 67220401601. The reversal of 67220401531 is 13510402276.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67220401531 - 2³⁵ = 32860663163 is a prime.

It is a super-2 number, since 2×67220401531² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67220401493 and 67220401502.

It is not a weakly prime, because it can be changed into another prime (67220401331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33610200765 + 33610200766.

It is an arithmetic number, because the mean of its divisors is an integer number (33610200766).

Almost surely, 2^67220401531 is an apocalyptic number.

67220401531 is a deficient number, since it is larger than the sum of its proper divisors (1).

67220401531 is an equidigital number, since it uses as much as digits as its factorization.

67220401531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 67220401531 in words is "sixty-seven billion, two hundred twenty million, four hundred one thousand, five hundred thirty-one".